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Concerning the management of sewage treatment plant using ac

题目
单选题
Concerning the management of sewage treatment plant using activated sludge, which of the following is correct?（）
A

the plant should be prohibited to supplying air

B

the plant should work at intervals

C

the plant should be added disinfector in time

D

we should check strength of activated sludge, ivory-white color is best

参考答案和解析
正确答案： D
解析： 暂无解析
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相似问题和答案

第1题：

Most marine biological sewage treatment plants consist of all the following statements except()

A.aeration tanks

B.settling tanks

C.disinfection agent(消毒剂

D.anaerobic bacteria(厌氧菌)


答案：C

第2题：

第三组：

The sewage treatment system must be capable of discharging an effluent that comes within the limits of the tests. Sewage can be treated biologically so that it may be discharged with minimal damage to ecosystem. Biological treatment involves the use of living organisms to treat the sewage within the sewage treatment plant so the liquids and sludge discharged are within the standards specified.

Biological treatment plants are usually built up as a module and consist of various sections.

Waste matter collected from the ships sanitary appliances is led through a sanitary piping system to the treatment module. The solid matter is broken up by passing it through a screen or a series of revolving cutters. The broken up solid material, together with the waste liquid, passes into a tank containing bacteria which require oxygen and a nutrient to propagate. The nutrient is contained in the solid waste material, and oxygen is supplied by bubbling compressed air through the broken up waste. The propagated bacteria change the waste material into a sludge by aerobic digestion. The sludge is finally treated to kill the coliform. bacteria before it is passed overboard.

When a biological sewage plant is started up, such as when activating a new ship or after cleaning out the tank, a pellet containing bacteria is introduced into the tank. It takes approximately one week for the bacteria to propagate and make the system fully effective. The choice of sanitary appliance cleaners requires extreme care, as many cleaners are toxic to the active bacteria. Once a biological sewage plant is made active it should not be shut down. If it is it will have to be reactivated again because the bacteria will die without a supply of nutrients and oxygen.

Bacteria that require oxygen for their survival are referred to as aerobic. Aerobic bacteria are normally used in ships&39; sewage treatment equipment. Other forms of bacteria that do not require oxygen are referred to as anaerobic. Anaerobic bacteria are used in shore based sewage treatment works where methane is obtained as a by-product for use as fuel.

This passage is mainly about

A.sewage treatment methods

B.the various sections of a sewage treatment plants

C.biological sewage treatment system

D.how the sewage treatment plants are started up


正确答案：C

第3题：

● （）is primarily concerned with defining and concerning what is and is not included in the project.（）A. Project Time ManagementB. Project Cost ManagementC. Project Scope ManagementD. Project Communications Management


正确答案：C
项目范围管理定义并关心哪些工作是项目应该做的哪些不是项目应该做的。

第4题：

共用题干
The Worker 's Role in Management
Traditionally,it has been the workers'role to work and management's role to manage.Managers have planned and directed the firm's operations with little thought of consulting the labor force.Managers have rarely felt compelled（被迫的）to obtain the workers ' opinions or to explain their decisions to their employees.At most,companies have provided"suggestion boxes"in which workers could place ideas for improving procedures.In recent years,however,many management specialists have been arguing that workers are more than sellers of labor-they have a vital stake in the company and may be able to make significant contributions to its management.Furthermore,major company decisions profoundly affect workers and their dependents.This is
particularly true of plant closings,which may put thousands on the unemployment lines.Should workers, then,play a stronger role in management?
Workers should have a role in management.At the very least,the labor force should be informed of major policy decisions(A common complaint among rank-and-file workers is the lack of information about company policies and actions).Between 1980 and 1985 about five million workers were the victims of plant closings and permanent layoffs（失业）,often with no warning.At least 90 days'notice ought to be given in such instances so that workers have time to adjust.Management should consult workers before closing a plant,because the workers might be able to suggest ways of improving productivity and reducing costs and might be willing to make concessions that will help keep the plant operating.
It should become a general practice to include workers in some managerial decision making.There ought to be representatives of the workers on the firm's board of directors or other major policymaking groups.If rank-and-file workers are given a voice in the planning and management of the work flow,they will help to make improvements,their morale will rise,and their productivity will increase.As a further incentive,they must be given a share in the company's profits.This can be done through employee stock-ownership plans,bonuses,or rewards for efficiency and productivity.Finally,when a plant can no longer operate at a profit,the workers should be given the opportunity to purchase the plant and run it themselves.

If not given a voice in managerial decision making,workers______.
A:may lack the incentive to increase their productivity
B:cannot get a share in the company's profits
C:can still get bonuses for efficiency and productivity
D:will not have the opportunity to purchase the plant

答案：A
解析：
由文章第一段第三句“Managershaverarelyfeltcompelled…”可知，管理者很少去关注员工的想法，故选A。
由文章第一段第五句及其后内容可知，很多管理学专家称工人并不仅仅是劳动力出卖者，他们和公司的利益休戚相关，或许可以为公司的管理做出巨大贡献，所以工人在公司的管理中应该享有发言权。故本题选D。
根据该词所在句子的内容可知，对公司的决策和行动缺乏知悉度这种情况在基层工人中会出现，故选B。
由文章第二段第三句可知，在1980到1985年间，大约有500万工人在未被提前告知的情况下成为了工厂停工倒闭的受害者，故选C。
由文章最后一段第三句的内容可知，如果普通工人能在公司计划以及流程运营中具有发言权，就会使他们进行改进，增长士气，提高生产率，故选A。第三篇本文主要介绍了肥胖症这一世界性的问题。并论述了肥胖对身体产生的危害，以及可以对肥胖采取的预防机制。

第5题：

Most marine biological sewage treatment plants consist of all the following statements except ______.

A.aeration(通风) tanks

B.settling tanks

C.disinfection agent(消毒剂)

D.anaerobic bacteria(厌氧菌)


正确答案：D

第6题：

The biological sewage treatment plant utilizes Oto completely break down the sewage into an acceptable substance for discharge－into anywaters

A.agitation function

B.bacteria

C.chemica

D.oxidizing function


答案：B

第7题：

Biological treatment may use __ to treat sewage (1)living organisms (2)chemicals (3)additives

A.(1)

B.(2)

C.(3)

D.(1)(2)(3)


正确答案：A

第8题：

Theois designed with a primary combustion chamber for burning sludge oil and ／or solid waste, and two secondary combustion chambers for9ases.burning uncombusted exhaust

A.boiler

B.separator

C.incinerator

D.treatment lological sewage


答案：C

第9题：

共用题干
The Worker 's Role in Management
Traditionally,it has been the workers'role to work and management's role to manage.Managers have planned and directed the firm's operations with little thought of consulting the labor force.Managers have rarely felt compelled（被迫的）to obtain the workers ' opinions or to explain their decisions to their employees.At most,companies have provided"suggestion boxes"in which workers could place ideas for improving procedures.In recent years,however,many management specialists have been arguing that workers are more than sellers of labor-they have a vital stake in the company and may be able to make significant contributions to its management.Furthermore,major company decisions profoundly affect workers and their dependents.This is
particularly true of plant closings,which may put thousands on the unemployment lines.Should workers, then,play a stronger role in management?
Workers should have a role in management.At the very least,the labor force should be informed of major policy decisions(A common complaint among rank-and-file workers is the lack of information about company policies and actions).Between 1980 and 1985 about five million workers were the victims of plant closings and permanent layoffs（失业）,often with no warning.At least 90 days'notice ought to be given in such instances so that workers have time to adjust.Management should consult workers before closing a plant,because the workers might be able to suggest ways of improving productivity and reducing costs and might be willing to make concessions that will help keep the plant operating.
It should become a general practice to include workers in some managerial decision making.There ought to be representatives of the workers on the firm's board of directors or other major policymaking groups.If rank-and-file workers are given a voice in the planning and management of the work flow,they will help to make improvements,their morale will rise,and their productivity will increase.As a further incentive,they must be given a share in the company's profits.This can be done through employee stock-ownership plans,bonuses,or rewards for efficiency and productivity.Finally,when a plant can no longer operate at a profit,the workers should be given the opportunity to purchase the plant and run it themselves.

In recent years,many management specialists have been arguing that workers______.
A:are no longer sellers of the products
B:are less affected by company decisions than before
C:are able to make final decisions for the company
D:should have a say in management of the company

答案：D
解析：
由文章第一段第三句“Managershaverarelyfeltcompelled…”可知，管理者很少去关注员工的想法，故选A。
由文章第一段第五句及其后内容可知，很多管理学专家称工人并不仅仅是劳动力出卖者，他们和公司的利益休戚相关，或许可以为公司的管理做出巨大贡献，所以工人在公司的管理中应该享有发言权。故本题选D。
根据该词所在句子的内容可知，对公司的决策和行动缺乏知悉度这种情况在基层工人中会出现，故选B。
由文章第二段第三句可知，在1980到1985年间，大约有500万工人在未被提前告知的情况下成为了工厂停工倒闭的受害者，故选C。
由文章最后一段第三句的内容可知，如果普通工人能在公司计划以及流程运营中具有发言权，就会使他们进行改进，增长士气，提高生产率，故选A。第三篇本文主要介绍了肥胖症这一世界性的问题。并论述了肥胖对身体产生的危害，以及可以对肥胖采取的预防机制。

第10题：

备用电源系统（ABEX,HMG,SEP)向什么汇流条供电？

  • A、Essential DC bus(Using the TRU)
  • B、Essential AC bus(Using the E-inverter)
  • C、Essential DC bus(Using the TRU)和Essential AC bus(Using the E-inverter)
  • D、Essential DC bus(Using the E-inverter)和Essential AC bus(Using the TRU)

正确答案:C

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