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（） may be the first possible cause which makes the engine to

题目
单选题
（） may be the first possible cause which makes the engine to lose power or slow down when it is running.
A

Hot bearing 

B

Starting valves

C

Unequal distribution of load

D

Excessive crankshaft clearance

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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 statement concerning the application of dry chemical powder is FALSE ________．

A.At temperatures of less than 32℉，the extinguisher must be recharged more often

B.When possible，the fire should be attacked from windward

C.The stream should be directed at the base of the fire

D.Directing the stream into burning flammable liquid may cause splashing


正确答案：A

第3题：

Thus, the anthropological concept of“culture,”like the concept of“set”in mathematics, is an abstract concept which makes possible immense amounts of concrete research and understanding.


正确答案：
因此，人类学中“文化”概念就像数学中“集”的概念一样，是一个抽象概念，它使大量的具体研究和认识成为可能。

第4题：

单选题
Which of the following problems represent one possible cause of high lube oil consumption in a four stroke diesel engine?（）
A

Worn intake valve guides

B

Pitted pre-combustion chambers

C

Loose valve tappets

D

High exhaust back pressure


正确答案： D
解析： 暂无解析

第5题：

Under regulation 6(2) of MARPOL Annex VI, ships constructed before 19 May 2005 shall be issued with the IAPP Certificate no later than the first scheduled dry docking after 19 May 2005, but in no case later than 19 May 2008. Ships flying the flag of a State which is not a Party to MARPOL Annex VI and which do not carry an IAPP Certificate after the above dates should be treated in accordance with chapter 3 of these Guidelines. Which deficiency listed below may not cause the detention of the vessel by PSC inspection?（）

  • A、Absence of valid IAPP Certificate, EIAPP Certificates or Technical Files
  • B、A diesel engine, with a power output of more than 130 kW, which is installed on board a ship constructed on or after 1 January 2000, or a diesel engine having undergone a major conversion on or after 1 January 2000, which does not comply with the NOx Technical Code
  • C、the sulphur content of any fuel oil being used on board exceeds 4.5% m/m
  • D、An incinerator installed on board the ship before 1 January 2000 does not comply with requirements contained in appendix IV to the Annex, or the standard specifications for shipboard incinerators developed by the Organization (resolutions MEPC.76(40) and MEPC.93(45))

正确答案:D

第6题：

Fuel has been injected but ignition fails. The possible cause may be ______.

A.slightly leaky exhaust valve

B.increased scavenging air temperature

C.engine cylinders not scavenged sufficiently

D.too much water in the fuel oil


正确答案：D

第7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：

A printer is not pulling paper out of the paper tray. Which of the following is the MOST possible cause of the problem? （）

  • A、Pickup rollers
  • B、Print head
  • C、Drum
  • D、Fuser

正确答案:A

第10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

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