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    pmd的含义是()。

    hfc网络主要采用复用方式是()。

    adsl是指()。

    hfc网络是()。

    cmts安装hfc网络的()。

    hfc网络上使用的接入技术是()。

    下列哪个无线局域网的标准是工作在5ghz波段的?()

    hfc网络中,头端与分配网络之间的传输介质是()。

    以太网的mac层采用的协议是()。

    目前,以太网用户的接入管理采用的是()。

    下列哪些是oan光接入网中采用的复用技术?()

    xdsl的转移模式有()。

    拨号接入技术主要分为哪两种?()

    ieee802.ah中定义了一系列的全双工的mdi接口,分别是()。

    在无线局域网中,连接过个bss时使用分布式(ds)系统。()

    fttc是光纤到办公室的意思。()

    不同的xdsl技术在速率、使用宽带、应用环境方面都不一样。()

    固定无线接入一般采用有中心的拓扑结构。()

    adsl路由器接入是adsl接入技术的一种典型应用。()

    ip接入网与电信接入网最大差别是ip接入网中增加了ip接入功能。()

    isdn接入不能数话同传。()

    pon是指有源光网络。()

    catv是无线电视网络。()

    1m³砖砌体需用普通砖()块。

    建筑钢材随着含碳质量分数的提高,()。

    下列碳素结构钢中含碳量最高的是()。

    建筑中主要应用的是()号钢。

    碳素钢结构牌号中,用字母()表示的质量等级最好。

    烧结普通砖强度等级的表示方法是()。

    下列()不属于加气混凝土砌块的特点。

    烧结普通砖的质量等级是根据()划分的。

    石油沥青的塑性用延度的大小来表示,当沥青的延度值越小时,()。

    普通碳钢按屈服点、质量等级及脱氧方法划分若干个牌号,随牌号提高,钢材的()。

    预应力混凝土用热处理钢筋是用()经淬火和回火等等调质处理而成的。

    钢筋经冷拉和时效处理后,其性能的变化中,以下何种说法是不正确的?()

    下列材料()可以作为卫生间吊顶的罩面板。

    黏稠沥青的粘性用针入度值表示,当针入度值愈大时,()。

    石油沥青的温度稳定性用软化点来表示,当沥青的软化点越高时,()。

    _______ refers to the study of the origins of words.

    modern western medicine traces its roots to the 5th century bc, when the greek physician _______ first attributed illness to physical causes, and taught diagnosis by observation and treatment by fostering or restoring natural processes.

    in the early period of modern english, europe saw a new upsurge of learning ancient greek and roman classics, which is known in history as the _______.

    old english vocabulary was essentially _______ with a number of borrowings from latin and scandinavian.

    the rod of ______, a snake-entwined staff, remains a symbol of medicine today.

    a ______ is the allest meaningful unit of a language.

    in the word bronchi, -i is a(n) _______ morpheme.

    how to pronounce the word colostomy?

    how to pronounce the word peritonitis?

    1. which of the following term is correct?

    divide each term into its word parts. write these word parts, in sequence, on the lines provided. when necessary, use a slash (/) to indicate a combining vowel. (you may not need all of the lines provided.) 注意:前缀后加-;后缀前加-;词根后用/o 例如:postnasal:post- nas/o -al neuroplasty is the surgical repair of nerves. _ neur/o _ ___________

    divide each term into its word parts. write these word parts, in sequence, on the lines provided. when necessary, use a slash (/) to indicate a combining vowel. (you may not need all of the lines provided.) 注意:前缀后加-;后缀前加-;词根后用/o 例如:postnasal:post- nas/o -al pathology is the study of all aspects of diseases ___________ _-logy_

    divide each term into its word parts. write these word parts, in sequence, on the lines provided. when necessary, use a slash (/) to indicate a combining vowel. (you may not need all of the lines provided.) 注意:前缀后加-;后缀前加-;词根后用/o 例如:postnasal:post- nas/o -al discomfort is not comfort. ___________ _ comfort_

    divide each term into its word parts. write these word parts, in sequence, on the lines provided. when necessary, use a slash (/) to indicate a combining vowel. (you may not need all of the lines provided.) 注意:前缀后加-;后缀前加-;词根后用/o 例如:postnasal:post- nas/o -al abnormal is deviating from normal. ___________ _normal_

    divide each term into its word parts. write these word parts, in sequence, on the lines provided. when necessary, use a slash (/) to indicate a combining vowel. (you may not need all of the lines provided.) 注意:前缀后加-;后缀前加-;词根后用/o 例如:postnasal:post- nas/o -al prenatal means before birth _pre-_ ___________ _-al__

    use the suffixes found in this section to complete the crossword puzzle game with the help of the hints. down 1 ____________

    use the suffixes found in this section to complete the crossword puzzle game with the help of the hints. down 2 ____________

    use the suffixes found in this section to complete the crossword puzzle game with the help of the hints. across 1 ____________________

    use the suffixes found in this section to complete the crossword puzzle game with the help of the hints. across 2 ____________

    use the suffixes found in this section to complete the crossword puzzle game with the help of the hints. across 3 ____________

    what does the prefix "hypo-" mean?

    what does the prefix "tachy-" mean?

    what does the prefix "micro-" mean?

    which of the following words means "surgical incision into the heart" ?

    which of the following words means "visual examination of the internal structure of a joint"?

    which of the following words means "a all lobe"?

    what does the prefix "sub-" mean?

    the word "inpure" is spelled correctly.

    the prefix "quadr-" means four.

    both "hemi-" and "poly-" mean half.

    a patient diagnosed with __________ experiences problems during biting and grinding food.

    the substance that helps to form a bolus in the mouth is called__________.

    the correct order of the sections of the all intestine is __________.

    surgical repair of the rectum is called__________.

    a gastric lavage is performed for blood clots in the __________.

    a dangerous twisting of the colon is called__________.

    difficulty in the act of swallowing is called__________.

    which condition interferes with the normal functioning of the liver?

    the procedure used to treat stones in the gallbladder without removing the gallbladder is called __________.

    the condition known as stomatitis occurs in the __________.

    __________ is the portion of colon between the rectum and the descending colon.

    __________is a serious condition in which part of the intestine slides into an adjacent part of the intestine.

    __________ or surgical lip restoration is the technical term for surgery of the lip usually performed by a plastic surgeon.

    esophagoscopy is the endoscopic examination of the interior of the esophagus.

    odontalgia is the pain in the __________.

    discuss with your ctes about using the combining forms learnt in this unit to expand your term bank. don’t forget to consult a dictionary.

    _____________ is the first organ of the respiratory system.

    the upper respiratory tract or upper airway contains organs located outside the chest cavity, including nose, ______________ and larynx.

    ____________ means the inflammation of the mucous membrane of the nose and paranasal sinuses.

    the medical term ___________ means the surgical removal of part or all of the pharynx.

    what is the condition that causes a progressive loss of lung function?

    what is the test used to examine the nasal passages and the pharynx to diagnose structural abnormalities?

    which combining form means "breath, wind, air or gas"?

    the throat is the common name for __________?

    the abbreviation copd stands for __________.

    the term for the measurement of the movement of air in and out of the lungs during various breathing maneuvers is ___________, which is the most important pulmonary function test.

    the medical term _________ refers to a calculus or stone in the lung.

    what is the region of the body formed by the sternum, thoracic vertebrae and rib?

    the term that most specifically applies to inflammation of the structure between the pharynx and trachea is _____________.

    the membrane surrounding the lungs is ___________.

    the gas that is supplied to tissues by the respiratory system is_____________.

    the gas that is eliminated by the respiratory system is _______________.

    the air sacs through which gases are exchanged in the lungs are the___________.

    the structure that holds the vocal cords is the ____________.

    the tubes that carry air from the trachea into the lungs are the ___________.

    the dome-shaped muscle under the lungs is the _____________.

    the __________ is the sac around the heart.

    the epicardium is the __________ lining of the heart.

    the __________ is the inner lining of the heart.

    the two upper receiving chambers of the heart are called the right and left _________.

    another name for the mitral valve is the __________ valve.

    the pulmonary valve is located between the right ventricle and the pulmonary __________.

    the __________ valve is also referred to as a semilunar valve.

    the mitral valve has __________ cusps or leaflets that open and close.

    the tricuspid valve is also called the __________ valve.

    the largest artery in the body is the __________.

    the inferior vena cava is a large __________.

    the all artery is called a(n) __________.

    __________ refers to the contraction phase of the ventricles in the heartbeat cycle.

    the relaxation phase of the ventricles in the heartbeat cycle is __________.

    the accumulation of fatty deposits within the lining of an artery is termed __________.

    the fatty deposits accumulated within the lining of an artery is __________.

    __________ means a condition in which the vessel’s lumen is restricted and blood flow to the tissues is reduced.

    __________ is a general term describing any hardening of medium or large arteries from any cause.

    __________ is any irregularity of heart rhythm, such as an altered heart rate, extra beats, or a change in the pattern of the beat.

    __________ is the general term for restoration of a normal heart rhythm, either by drugs or application of electric current.

    the structural and functional unit of the kidney is___________.

    the outer part of the kidney is called_______________.

    the ooth triangular part at the base of bladder is called______________.

    a cup-like cavity or structure is named ______________.

    the combining form indicating a collection of capillaries in the kidney is__________.

    the temporary reservoir for urine in the body is___________.

    frequent urination at night is termed as____________.

    urination is a synonym for________________.

    the patient with _____________ has an accumulation of fluid resulting in enlargement of the kidney.

    the surgical procedure for removing renal adhesions is called ___________.

    in renal failure, _____________ is used to remove urea from the blood.

    the patient receiving ____________ has his or her bladder removed.

    the presence of red blood cells in the urine is called________.

    the combining form indicating a collection of capillaries in the kidney is_______.

    the outer part of the kidney is called_______________.

    the temporary reservoir for urine in the body is___________.

    surgical repair of the rectum is called__________.

    a dangerous twisting of the colon is called__________.

    difficulty in the act of swallowing is called__________.

    the condition known as stomatitis occurs in the __________.

    paralytic obstruction is also known as_____________ obstruction.

    _________ thermometer can be used in taking temperature for a child.

    what is the test used to examine the nasal passages and the pharynx to diagnose structural abnormalities?

    the air sacs through which gases are exchanged in the lungs are the___________.

    the membrane surrounding the lungs is ___________.

    the term for the measurement of the movement of air in and out of the lungs during various breathing maneuvers is ___________, which is the most important pulmonary function test.

    the __________ is the inner lining of the heart.

    the two upper receiving chambers of the heart are called the right and left _________.

    the mitral valve has __________ cusps or leaflets that open and close.

    __________ refers to the contraction phase of the ventricles in the heartbeat cycle.

    __________ is any irregularity of heart rhythm, such as an altered heart rate, extra beats, or a change in the pattern of the beat.

    the word "osteorrhaphy" should be pronounced as ________.

    which of the following the correct pronunciation of "stomatoplasty"?

    which suffix indicates stopping, controlling?

    which suffix indicates discharge?

    which prefix indicates between, among?

    a ______ is the allest meaningful unit of a language.

    how to pronounce the word peritonitis?

    the throat is a muscular tube that runs from the back of your nose down into your neck. it contains three sections: the ___________, oropharynx and laryngopharynx.

    the term for “shortness of breath” is ____________ which means difficult or laboured breathing.

    _________is surgery on the nose to change its shape or improve its function by modifying the bone or cartilage.

    the word “laryngectomy” should be pronounced as _________.

    an orthodontist a dentist specializing in the prevention or correction of irregularities of the teeth.

    etymology refers to the study of the origins of words.

    the rod of asclepius, a snake-entwined staff, remains a symbol of medicine today.

    the plural form of "metastasis" is "metastases".

    the terminology for the surgical removal of a kidney and a ureter is nephroureterectomy.

    jennie complained of painful urination. the medical term for this is hematuria.

    urethritis is the inflammation of urethra due to injury or infection.

    any minute globular particle is called corpus.

    a dilatation of a calix of the kidney, usually due to obstruction or infection is named caliectasis.

    a cell that engulfs and digests debris and invading microorganis is known as phagocyte.

    appendectomy is the surgical removal of appendix.

    the combining form for “arteriole” is “arteri/o”.

    “thrombectomy” means excision of a clot from a blood vessel.

    the word meaning pertaining to the pericardium is “pericardiac”.

    “vasculitis” shares the same meaning with “angiitis”.

    the right av valve is also called mitral valve.

    anaphylaxis is a life-threatening allergic reaction that must be treated immediately.

    the synonym for spir/o is hal/o.

    an gastroenterologist is physician who specializes in diseases of the cardiovascular system.

    defecation is the process of taking food into the body through the mouth (as by eating).

    the plural form of "vertebra" is _____________.

    ______年成立世界上第一个职业棒球队。

    ______年5月20日在希腊召开的国际奥林匹克委员会全体会议上,通过棒球为奥林匹克运动会正式比赛项目。

    1907年,北京汇文书院对________进行比赛。这是最早的一次棒球比赛。

    1959年,第一届全运会上,棒球被列为正式比赛项目,有23个省、市队参加,_______获得冠军。

    _______年由体育总局小球运动管理中心和棒球协会主办了第一次棒球联赛,这是继足球、篮球、排球之后第四个全国联赛。

    棒球比赛场地是一个_______区域,直角两边是区分界内地区和界外地区的边线,两边线以内为界内地区,两边线以外为界外地区。

    棒球内场各垒间距离为_______米,投手板的前沿中心至本垒板尖角的距离为18.44米。

    棒球项目于______年7月8日被国际奥会正式排除在奥运比赛之外。

    世界棒球经典赛是由职棒大联盟与国际棒球总会共同策划的国际棒球大赛,首届比赛于_______年3月3日在日本进行第一场比赛。

    职业棒球大联盟的每支球队在球季中至少要打______场比赛。

    棒球比赛中,两队各有9名队员同时在场上。

    棒球比赛中,后位跑垒员可以利用优秀的跑垒意识和速度超越前位跑垒员。

    击球手沿逆时针方向,依次攻占一垒、二垒、三垒,最后跑回本垒,每占一个垒包进攻方都可以得1分,跑回本垒可得4分。

    接杀不分界内界外,只要球没落地,被防守队员接到,就是接杀,击球员出局。

    球被防守队员直接接住,击球员被接杀,那么跑垒员必须强制回垒,再次接触自己之前所在的垒包,然后才能重新出发跑垒。

    棒球项目在常规比赛时间共设有_____局,每1局都分上下两个半局。

    棒球比赛中,进攻队____人出局后交换攻守。

    棒球场地上共有4个垒包,分别是一垒、二垒、三垒和_____。

    棒球比赛中,游击手的正常防守站位应该在二垒和_____之间。

    如果好球数达到3个,击球员就被三振出局;如果投手投了____个坏球,击球员就被保送到一垒。

    传球时,传球者需侧身面对传球目标,若传球者以左手为惯用手则将左手放在前侧身面对目标。

    传球时,传球者的大臂与小臂呈大约90度,肘部抬至约肩部高度。

    正常的棒球传球方式所使用的是食指、中指和无名指。

    传球时,传球者的左肘、左肩、右肩、右肘成一条直线。

    传球时,传球者要尽全力握紧球,以防球脱手。

    棒球比赛时,击出的球触及一垒、二垒或三垒垒包时,裁判判定界外球。

    从本垒经一、三垒边线其延长线直到挡墙或围网(包括垂直面的空间)以内的区域叫“界内地区”。

    棒球比赛中,击出的球从界内地区上空直接越出本垒打线时,裁判判定界外球。

    守场员无失误而使攻队两名队员连续出局的防守行为叫“双杀”,大致可分为两种:双封杀、__________。

    守场员在处理界内地滚球时不传杀击跑员而传杀前位跑垒员出局的防守行为叫__________。

    佩戴棒球防守手套时,右手为惯用手右手佩戴手套,左手为惯用手则是左手佩戴手套。

    接球时,手套应放置在双腿中间的左前方,手套腾空,手套球窝位置微微朝向前方。

    高飞球是指击出的又高又远的球,这是评判是否为高飞球的标准。

    接高飞球时,在跑动过程中不要举着手套跑,球快下落时再将手套举起。

    从本垒经过一、三垒边线及其延长线直到挡墙或围⽹(包括垂直的空间)以外的区域叫“界外地区”。

    在本队球场或本地球场进行比赛时,该队即为“主队”,按惯例先守又叫“先攻队”,率先进攻。

    投手急速向没有准备好的击球员投球将被判“不合法投球”

    接球时手套的使用应遵循“_______接球法则”。

    在地面滚动或弹跳的击球叫________。

    在两人出局前,一、二垒或一、二、三垒都有跑垒员时,击球员合法击出落在内场或内场附近并为守场员(包括外场手)轻易接住的界内腾空球(平直球和用触及法击出的腾空球除外)叫_________。

    投手牵制球是在垒上有跑者时会产生的局面,且投手必须以侧板投球姿势准备时才能完成的动作。

    在一垒有人时,投手在踏板后为了方便观察一垒的跑者,可以转动肩膀。

    比赛双方分别因三人出局而交换攻守各一次为“一局”。

    守队队员防守无失误而将攻队三名队员连续传杀出局的防守行为叫“双杀”。

    _______是投手在每次投球前需要踏上的标志板,在投球转体时可借用投手板更好的发力。

    _______是在垒上无人的情况下使用的投球方式,投手有充足的时间让自己做好投球准备。

    _______这种投球方式的目的是用最短的时间将球投出,限制跑者的进垒。

    迅猛而直接飞向守场员而未触及地面的击球叫________。

    守场员没有持球,也不是在接球中而阻碍跑垒员进垒的行为叫________。

    攻队队员被取消击球、跑垒或得分的权利或者防守队为使本队改守为攻,使进攻队失去三次进攻机会之一的行为叫________。

    捕手接球时,应用手套的球窝处即手的虎口位置对正来球,无论是否挥棒,两眼始终注视来球,绝不眨眼。

    捕手在接球时,在不妨碍击球的情况下,应尽量靠近击球员接球,原因是在球穿过好球带后最短的距离内将球接住,可便于观察停球位置。

    捕手接慢球,要尽量伸出手套接球,为了使好球不变化为坏球。

    捕手牵制时,其传球方向和目标不相同,向一垒牵制时,目标在垒包的右侧。

    在外场位置上进行防守的队员叫_________。(答题不加双引号)

    偏离本垒板致接手无法经过正常努力接住的投球叫_________。(答题不加双引号)

    击球员尚未作好击球准备,投手突然急速向其投球企图使击球员失去平衡的行为叫_________,是不合法投球。(答题不加双引号)

    捕手传杀一垒时,接_______球的步法:右脚向右跨出一小步,左脚向一垒方向伸踏。(填写“左边”、“正中”或“右边”,不需要加双引号)

    捕手传杀三垒时,接______球的步法:接住球后,右脚用后交叉垫步向三垒伸踏。(填写“左边”、“正中”或“右边”,不需要加双引号)

    攻队队员除从本垒进入一垒外,凡因滑垒过头致离开垒位的行为叫________。(答题不加双引号)

    握棒时,四指勾住棒根,大拇指松开,卷紧球棒,第一指关节成一条直线。

    握棒时,两手握住棒根,两手间可以留有缝隙,根据力量大小不同,握棒长短也可以不同。

    握棒时,对于右打者而言,右手握于左手之上。

    准备击球时,两脚平行开立,与肩同宽,前脚掌用力,两膝微蹲。

    击球时,击球员未挥棒击球,但该投球的任何部分在飞行状态中通过了好球区的任何部分,裁判判为好球,也称为“击”。

    守场员用手或手套牢固地将球握住,同时以身体任一部分触垒或持球的手或手套碰触跑垒员的防守行为叫________。

    守场员对跑在两个垒位之间的跑垒员进行传杀的防守行为叫________。

    击球员牺牲自己安全上垒的权利而使跑垒员进垒得分的击球叫________。

    牺牲打根据攻守局面和击球方法的不同分_______________和触击球牺牲打。

    在三垒有跑垒员时,运用触击法使三垒跑垒员抢进本垒得分的一种进攻战术叫__________。

    若击出的球只允许击跑员跑到一垒,那么击跑员跑向一垒时应该全力冲刺一垒,全速冲过一垒垒包之后,两脚踏碎步以尽快减速。

    跑垒员在拐一垒时须在离一垒大约5米的地方,向外拐出一个弧度,然后再往一垒垒包跑。

    跑垒员拐一垒是为了通过一垒后不用减速,直接可以向二垒进垒。

    跑垒员拐垒时,内侧手臂摆动幅度应大于外侧手,同时身体向外倾斜。

    跑垒员通过一垒时,要使用左脚去踩踏一垒内角,就算降速也要用左脚踩踏垒包。

    跑垒员冲二垒或三垒时,与冲一垒相似,但不同的是,到达这两个垒位时,不可全速通过,必须提前减速,或滑垒或扑垒,停在垒包上,用身体任何一个部位去碰触垒包,以防止被防守队员触杀。

    跑垒员冲本垒同冲一垒相似,可以冲过而不必停留在垒包上,踩踏通过即可,无论出局与否,冲过本垒以后都不需要再次返回本垒。

    扑垒的最佳情况,是身体触地时,手正好到达垒包。

    跑垒员下铲,将身体贴地滑动的占垒动作叫________技术,是跑垒技术中一个重要技术。

    ________技术主要应用于跑垒员离垒后的返垒,以及快要被杀出局的紧要时刻使用。

    可通过()减小输电线路有功损耗

    自动调节励磁装置可以(),因而可以提高系统的稳定性

    采用分裂导线的目的是()

    同步发电机供电时,三相短路电流中的二倍频分量是由()分量引起的

    系统受到小的干扰后,各负荷母线的无功能否保持平衡或恢复平衡的能力称()

    消弧线圈采用全补偿,当系统发生单相接地时,可能会使系统()

    导纳矩阵中非零元素的个数等于()

    频率的一次调整是()

    有功功率流过线路电抗时,产生的功率损耗一定是()

    当负序电流流过网络时,一定会在网络中产生()电压降

    关于短路故障时正序电压、负序电压和零序电压的分布,下述说法中错误的是()。

    减小系统电抗的措施有()。

    关于联合电力系统,下述说法中正确的是()。

    衡量电力系统运行经济性的主要指标是()。

    对电力系统的基本要求是()。

    提高系统静态稳定性的措施有()。

    关于同步发电机机端三相短路情况下的短路电流周期分量,下面说法中错误的是()。

    我国标准规定的、常用的网络额定电压等级(10千伏及以上)()。

    下述各项调压措施中,能实现逆调压的是()。

    电力网络主要由下列哪些组成()。

    分析暂态稳定性时,可以不考虑零序分量的影响,但必须考虑负序分量的影响。()

    短路电流在最恶劣短路情况下的最大瞬时值称为短路冲击电流。()

    提高静稳定的措施之一就是提高原动机的输入功率p。()

    任何三相对称的静止元件的正序和负序的参数是一致的。()

    一般系统中所有没有满载的发电机组都可以进行一次调频。()

    电力网是指由变压器和输配电线路组成的用于电能变换和输送分配的网络。()

    当故障切除角小于极限切除角时,系统一定是暂态稳定的。()

    循环功率只与负荷大小有关,而与两端电源电压的高低和相位无关。()

    换位就是改变架空导线的几何均距。()

    污染物进入天然水体后,通过一系列物理、化学和生物因素的共同作用,致使污染物质的总量减少或浓度降低,使曾受污染的天然水体部分地或完全地恢复原状,这种现象称为____。

    水环境容量是指在满足水环境质量标准的要求下,水体容纳污染物的最大负荷量。影响水环境容量的因素中,_____和____是内在因素,______是外在因素。

    汞的毒性很强,易透过细胞膜,进入生物体内,损害()。

    水体的人为污染源的种类很多,成分复杂,下列哪一项不属于水体的人为污染源。()

    大量的“热流出物”(如冷却水)排入水体后会使水温升高,若水温升高到足以使水生生物的种类和数量发生变化,影响其繁殖和生长时,称为____。

    库水体流速低,基本上属于静水环境,关于其自净特点描述正确的有___。

    河流是流动的,因此河流水体的自净特点都是通过水流作用所产生的一系列自净效应体现的。关于河流污染的特点描述正确的有_____。

    底质可以反映污染历史过程,其原因有_____。

    河流的径流量决定了河流对污染物的稀释能力。在排污量相同的情况下,河流的径流量越大,稀释能力就越强,污染程度就越轻。()

    被降雨、径流等动力因素带入河湖中,沉淀到水底,以沙粒、粘土、有机物残体为主的沉积物,称为水底沉积物,又称为底质或底泥。()

    任何污染物进入水体后都会产生两个互为关联的现象,一是使水体的水质恶化,二是水体相应具有一定的自净作用,这两种现象互为依存,始终贯穿于水体的污染过程中,并且在一定条件下可互相转化。()

    水环境容量是指某一水环境单元在给定的环境目标下所能容纳的污染物的最大负荷量,又称作水体负荷量或纳污能力。()

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