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Which of the following may cause that excessively warm water

题目
单选题
Which of the following may cause that excessively warm water leaves the condenser in a refrigeration plant? （） (1) too little cooling water (2) too much cooling water (3) too warm cooler water
A

（1）only

B

anyof（1），（2）and（3）

C

anyof（1）and（3）

D

anyof（1）and（2）

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相似问题和答案

第1题：

Which of the following actions may cause a trigger to be fired?()

A.DROP

B.ALTER

C.DELETE

D.ROLLBACK


参考答案：C

第2题：

Which of the following statements is TRUE according to the passage?___________

A.Oceanic salinity has great effect on sea life
B.Many factors combine to cause changes in oceanic salinity
C.The movement of the water is related to the amount of salt
D.The temperature of the water has much to do with the oceanic salinity

答案：D
解析：
按照出题顺序，此题考查的是海水盐度变化的第三个原因。根据第四段可知，海水冻冰后，杂质析出，因此冰下的海水比冰冻前的盐度高；冰融化后，海水盐度又会降低。所以答案为D．即海水温度与盐度有很大关系。

第3题：

The main propulsion diesel engine jacket water temperature rises above normal, with the raw sea suction and the expansion tank water level being normal. Which of the following problems is most likely the cause?

A.Faulty thermostatic bypass valve

B.Eroded zinc pencils in the heat exchanger

C.Steam formation in the expansion tank

D.Excessive leakage from jacket water pump seals


正确答案：A

第4题：

When a technician is moving a CRT monitor to another location， the monitor falls and breaks. Which of the following is the BEST way for a technician to clean up after this accident？（）

  • A、Use gloves and a broom to sweep the glass and debris into a rigid container.
  • B、Use a bucket of warm water and bleach to wash away loose debris before placing the glass in a trash can.
  • C、Individually pick up the glass and place into a plastic bag， do not sweep as this may cause dust to become airborne.
  • D、Use latex surgical gloves to place the glass into a plastic bag， sealing the bag after.

正确答案:A

第5题：

A Network Engineer is reporting that one of the AIX hosts is generating too much ICMP traffic, which is slowing the network.  Which of the following options is the most probable cause?（）

  • A、A large FTP job is in process. 
  • B、A network interface was misconfigured. 
  • C、The ping command is being used excessively. 
  • D、A bad network interface card and/or network cable is in use. 

正确答案:C

第6题：

What represents poor sanitary procedures ________．

A.Keep and use a separate filling hose for potable（drinking）water

B.Locate potable（drinking）water tanks as low as possible in the bilge

C.Eliminate enclosed spaces in which trash，food particles，dirt may gather

D.After washing dishes with soap and warm water，sterilize them in water of at least 170℉（76.7℃）


正确答案：B

第7题：

Which of the following is not the cause of the decrease in the oceanic salinity?___________

A.Precipitation
B.Rain and snow
C.Formation of ice
D.Addition of water by rivers

答案：C
解析：
本题采用排除法。根据第二段“The opposite of evaporation is Drecipitation…so that thesalinity is decreased．”，“in areas of high rainfall”和“in coastal regions where rivers flow into the ocean”可以排除A、B、D项，答案选C。

第8题：

Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?

A.A shortage of liquid refrigerant.

B.Excessive frost on the evaporator.

C.Excessive condenser cooling water.

D.Insufficient condenser cooling water flow.


正确答案：D

第9题：

Which of the following actions may cause a trigger to be fired?（）

  • A、DROP
  • B、ALTER
  • C、DELETE
  • D、ROLLBACK

正确答案:C

第10题：

Which of the following may cause a printer to not print correctly after updating from Windows 98 to Windows XP？（）

  • A、Incorrect printer driver.
  • B、Printer needs calibration.
  • C、Dirty printer head.
  • D、Font settings on the printer.

正确答案:A

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