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单选题Which of the following may cause that an engine doesnt run on starting air?（）A too low starting air pressureB main start valve closedC neither A nor BD A and B

题目
单选题
Which of the following may cause that an engine doesnt run on starting air?（）
A

too low starting air pressure

B

main start valve closed

C

neither A nor B

D

A and B

参考答案和解析
正确答案： B
解析： 暂无解析
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相似问题和答案

第1题：

One cylinder of a diesel engine is persistently knocking and does not cease(停止) when the fuel supply to that cylinder is secured.Which of the following problems may be the cause?

A.Low loading of the cylinder

B.Excessive cooling of that piston

C.Sluggish ring action on the piston

D.A mechanical defect in a working part


正确答案：D

第2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

第3题：

Which of the following is NOT mentioned in this passage?

A.There may be oil vapor in the engine room

B.Pipes and fittings may be damaged if explosion takes place

C.The cooler should be drained

D.Bursting caps must be fitted


正确答案：D

第4题：

单选题
If a diesel engine starts firing, but is unable to come up normal speed, either without load or even under a small load, the cause may be （）
A

insufficient fuel supply

B

faulty governor

C

high exhaust back pressure

D

all of the above may cause this problem


正确答案： A
解析： 暂无解析

第5题：

An administrator believes that the Staging Configuration Directory （SCD） may be locked due to an error in aDARE event. Which of the following commands can the administrator run to check for the existence of locks？（）

  • A、cldump d
  • B、cldare e
  • C、clverify L
  • D、chconfigchk r

正确答案:B

第6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7题：

After using the alt_disk_install command to clone a system image to another disk, the system administrator noticed a large number of defined devices not allocated to the LPAR. Which of the following is the most likely cause of this situation?（）

  • A、The cfgmgr command was not run to reconfigure the devices
  • B、The machine was not booted into SMS MultiBoot mode after configuration
  • C、The machine was not in full system partition mode when the volume was created
  • D、The alt_disk_install command was not run with the -O option to remove references in the ODM

正确答案:D

第8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9题：

单选题
Under manoeuvring condition the main engine may run on （）.
A

gas oil

B

marine diesel oil

C

residue oil

D

crude oil


正确答案： B
解析： 暂无解析

第10题：

单选题
Which of the following may cause that an engine doesnt turn on starting air?（）
A

too low starting air pressure

B

main starting valve closed

C

neither A nor B

D

A and B


正确答案： A
解析： 暂无解析

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