海船船员考试

单选题As to the piston cooling, of the following, which statement is not true?（）A Because the piston is exposed to very high temperature, it must be cooledB The lower the piston cooling temperature is, the better it isC Both water and lube oil can be used as

题目
单选题
As to the piston cooling, of the following, which statement is not true?（）
A

Because the piston is exposed to very high temperature, it must be cooled

B

The lower the piston cooling temperature is, the better it is

C

Both water and lube oil can be used as coolant

D

One of the piston cooling methods is vibration cooling, with better effect

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相似问题和答案

第1题：

Which of the following accurately describes the meaning of redundant cooling？（）

  • A、The source of cooling to a RAID system
  • B、The cooling system in a redundant power supply
  • C、A cooling system that can be installed in case of failure
  • D、A second cooling system in case of a failure

正确答案:D

第2题：

Which of the following would BEST provide cooling to a processor?（）

  • A、Case fan
  • B、Heatsink
  • C、Liquid cooling system
  • D、CPU fan

正确答案:C

第3题：

Which of the following financial statements reports information as of a specific date? ()

A. income statement

B. statement of owner's equity

C. statement of cash flows

D. balance sheet


参考答案：D

第4题：

单选题
Which of the following technologies can save server space and cooling requirements？（）
A

Energy star ratings

B

Active solar panels

C

Network storage array

D

Blade servers


正确答案： A
解析： 暂无解析

第5题：

Which of the following is used in an IBM Blade Center to provide cooling？（）

  • A、Fans for each blade
  • B、Chilled Water
  • C、Blowers
  • D、Freon

正确答案:A

第6题：

Which of the following is the MOST critical component related to removing heat from the CPU?（）

  • A、Vented case
  • B、Number of fans
  • C、Thermal paste
  • D、Liquid cooling

正确答案:C

第7题：

Which is the packaging strategy of iDataPlex of the following？（）

  • A、Fourteen servers per rack likeBladeCenter
  • B、Two servers per rack for optimal cooling cost
  • C、One server per rack for optimal cooling and energy efficiency
  • D、Four servers per rack （twoexach half high） for optimal cooling

正确答案:B

第8题：

Piston cooling fins are located

A.atop the piston crown

B.beneath the piston crown

C.at the base of the piston skirt

D.inside the cylinder liner cooling water jacket


正确答案：B

第9题：

单选题
Which of the following statements describes the function of an expansion tank in a diesel engine cooling system?（）
A

Maintains a constant head on the system

B

Reduces the likelihood of air or steam pockets formation

C

Provides a low pressure point for the addition of makeup cooling water

D

All of the above


正确答案： D
解析： 暂无解析

第10题：

单选题
Which cause of following will not lead to refrigeration plant short-cycle?（）
A

lack of refrigerant

B

refrigerant with much water

C

set defectively low pressure relay

D

no cooling water


正确答案： C
解析： 暂无解析

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