海船船员考试

单选题If you were inspecting the valve springs on an auxiliary diesel engine, your best indication of impending spring failure would be （）A a glazed surface on the springB nicks in the protective coatingC a build up of sludge depositsD cracks in the surface

题目
单选题
If you were inspecting the valve springs on an auxiliary diesel engine, your best indication of impending spring failure would be （）
A

a glazed surface on the spring

B

nicks in the protective coating

C

a build up of sludge deposits

D

cracks in the surface of the spring

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相似问题和答案

第1题：

Elephants would( )if men were allowed to shoot as many as they wished.

A. die down

B．die out

C．die away

D．die off


正确答案：B
B[解析]diedown（慢慢）熄灭，平静下来；dieout（家族、种族、习俗、观念等）灭绝，绝迹；dieaway（声音、风、光线等）渐息，渐弱；dieoff-个一个地死去．

第2题：

Which options must you configure while performing an automated Tablespace Point-in-Time Recovery (TSPITR) by using Recovery Manager (RMAN)?（）

  • A、New channels for restore and recovery tasks
  • B、New name for the data files of the tablespace
  • C、Auxiliary name for the data files of the tablespace
  • D、Auxiliary destinations for an auxiliary set of data files

正确答案:D

第3题：

Are you still here? You were here half an hour ago. Who( )for?

A、were you waiting

B、are you waiting

C、did you wait

D、do you wait


正确答案:B

第4题：

单选题
The（） is fitted in pair one is the main valve, the other the auxiliary or standby.
A

main stem stop valve

B

auxiliary steam stop valve

C

feed check or control valve

D

blow down valve


正确答案： B
解析： 暂无解析

第5题：

单选题
After you enter Thimble Shoal Channel，you will alter course to pass between Trestle “A” and “B”. Which channel should you use?（）
A

Thimble Shoal Main Channel or the South Auxiliary Channel

B

Any of the channels but keep to the right hand side

C

The South Auxiliary Channel

D

Thimble Shoal Main Channel


正确答案： D
解析： 暂无解析

第6题：

The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler ______.

A.steam demand is high

B.salinity is high

C.safety valve simmers(爆发)

D.burner flame is extinguished


正确答案：D

第7题：

单选题
If a refrigeration system compressor crankcase is sweating, you should （）.
A

add refrigerant to the system

B

adjust the thermal expansion valve to the proper setting

C

adjust the float valve to the proper holding pressure

D

open the hand expansion valve


正确答案： A
解析： 暂无解析

第8题：

Springs in fuel injectors will become not strong enough to work because______.

A.the injector opens at a lower pressure than designed

B.the needle valve and seat wear out

C.the nozzle holes wear out

D.long time in use


正确答案：D

第9题：

单选题
White smoke issuing from the exhaust of an auxiliary diesel engine valve opening （）
A

the engine is overloaded

B

the engine is cold

C

there is too much lube oil in the cylinders

D

the turbocharger is fouled


正确答案： D
解析： 暂无解析

第10题：

单选题
As to the low speed diesel engine, if you want to change the coolant flow for a certain cylinder, you can regulate （）.
A

the inlet valve

B

the outlet valve

C

both the inlet valve and the outlet valve

D

the pump inlet valve


正确答案： C
解析： 暂无解析

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