船舶电气与船舶安全题库 - 考试题库

【单选题】

[1/2000]（）, the engine must be stopped immediately.

A.

Should knocking occur

B.

If knocking occur

C.

Should if knocking occurs

D.

If occur knocking

参考答案：

A

参考解析：

无

【单选题】

[2/2000]The switchboards are those in which all the live parts are installed behind the panels and only the ...

A.

open

B.

open front type

C.

live front type

D.

dead front type

参考答案：

D

参考解析：

无

【单选题】

[3/2000]Which of the following statements is true concerning the cetane number of diesel fuel?（）

A.

The cetane number affects the amount of injection lag

B.

The cetane number is an indication of the fuels viscosity

D.

The cetane number is of little significance in the combustion proce

参考答案：

C

参考解析：

无

【单选题】

[4/2000]Great care is dedicated to the removal of from the scavenge air（）

A.

gravity

B.

viscosity

C.

density

D.

humidity

参考答案：

D

参考解析：

无

【单选题】

[5/2000]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

参考答案：

B

参考解析：

无

【单选题】

[6/2000]The volute of centrifugal pump also acts as a diffuser converting （）into pressure head.

A.

mechanical energy

B.

heat energy

C.

potential energy

D.

kinetic head

参考答案：

D

参考解析：

无

【单选题】

[7/2000]Which of the diesel engine components listed increase air density and helps to improve engine operat...

A.

Impeller

B.

Compressor

C.

After-cooler

D.

Exhaust differ

参考答案：

C

参考解析：

无

【单选题】

[8/2000]Following a grounding, you can best determine that a SLACK fuel oil tank has been holed by （）.

A.

sounding the tank

B.

waiting for the vessel to list

C.

examining tank boundaries

D.

checking fuel oil strainer

参考答案：

A

参考解析：

无

【单选题】

[9/2000]A “dead front” switchboard is one （）.

A.

without switches on it

B.

with insulated switches and no exposed terminals

C.

without circuit breakers

D.

without safety hand nails nor rubber mat

参考答案：

B

参考解析：

无

【单选题】

[10/2000]Remote control means that （）.

A.

the system is manned manually

B.

the system is situated remotely from the operator

C.

the system is controlled automatically

D.

all the above

参考答案：

B

参考解析：

无