海船船员考试

单选题The position of the interface between oil and water within the centrifuge is achieved by the use of （）.A gravity discB centrifugal bowlC a stack of discsD main sealing ring

题目
单选题
The position of the interface between oil and water within the centrifuge is achieved by the use of （）.
A

gravity disc

B

centrifugal bowl

C

a stack of discs

D

main sealing ring

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相似问题和答案

第1题：

The height of tide is the ______.

A.depth of water at a specific time due to tidal effect

B.difference between the depth of the water and the area's tidal datum

C.difference between the depth of the water and the high water tidal level

D.difference between the depth of the water at high tide and the depth of the water at low tide


正确答案：B

第2题：

（）extinguish oil and electrical fires with water.

  • A、Do
  • B、Did
  • C、Never
  • D、Isn’t

正确答案:C

第3题：

He () oil and water, but they ().

A、mixed, don’t mix

B、mixxed, were not mixxed

C、mixed, were not mixing

D、mixxed, don’t mix


参考答案：A

第4题：

单选题
Factor influencing the position of the interface between the liquid seal and the oil in a purifier is （）.
A

throughput

B

back pressure

C

gravity disc

D

None of the above is wrong


正确答案： D
解析： 暂无解析

第5题：

单选题
You should frequently compare drum-mounted and remote-reading water level indicators（） between these have contributed to failures because of overheating through shortage of water, when a boiler was being oil-fired.
A

descriptions

B

discrepancies

C

different

D

deflections


正确答案： B
解析： 暂无解析

第6题：

OIL-IN-WATER are ______．

A.sediment of oil in water

B.oil dissolvents in water

C.solid oil aggregates

D.droplets of oil suspended in water


正确答案：D

第7题：

单选题
A high rate of separation between oil and water is favored by （）.
A

large size of oil globule

B

low temperature

C

high viscosity

D

high flow rate


正确答案： B
解析： 暂无解析

第8题：

A high rate of separation between oil and water is favored by ______.

A.large size of oil globule(小球)

B.low temperature

C.high viscosity

D.high flow rate


正确答案：A

第9题：

单选题
If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be （）
A

a dirty lube oil strainer

B

internal water leaks

C

an oil suction line restriction

D

excessive wears of the cooling water pump


正确答案： B
解析： 暂无解析

第10题：

单选题
Which of the conditions listed may occur in an operating diesel engine if air pockets form within the cylinder head circulating water passages? （）
A

Hydraulic stress and distortion will develop

B

Hot spots will develop

C

Fuel oil viscosity will increased

D

An increase in trapped deposits of scale and dirt


正确答案： C
解析： 暂无解析

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