海船船员考试

单选题In heavy marine engine the practice is to drive the engine on（）which has previously been stored in starting air reservoirs.A electric motorB hydraulic motorC compressed airD turning gear

题目
单选题
In heavy marine engine the practice is to drive the engine on（）which has previously been stored in starting air reservoirs.
A

electric motor

B

hydraulic motor

C

compressed air

D

turning gear

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：

单选题
The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.
A

principle

B

principal

C

cause

D

case


正确答案： D
解析： 暂无解析

第2题：

单选题
Gear-type flexible couplings are often used in diesel engine drive trains because they（）
A

require no lubrication under normal operating conditions

B

compensate for gross misalignment in the drive train

C

are able to transmit high torque ,even where slight misalignment exists

D

will rapidly disconnect the engine from the line shaft


正确答案： A
解析： 暂无解析

第3题：

Have you ever served the auxiliary engine to combustion heavy oil? What should be borne in mind when transferring oil; from heavy oil to light oil?


正确答案：I have ever served the auxiliary engine to combustion a combination of A and C oil. When transferring oil from heavy oil to light oil, the changing of temperature should not be rapid. 1℃ to 2℃ per minute is the best. Meanwhile the viscosity changing is invariably observed. The oil temperature to be heated varies in quality of fuel oil. In general, 180 CST needs to be heated to 95-105℃; 380 CST needs to be heated to 130-135℃. The viscosity is under the control of approximately 2 Englers.

第4题：

单选题
Before a marine diesel engine is started the cylinders and pistons must be （）.
A

cooled to appropriate temperature

B

warmed up gradually to appropriate temperature

C

opened up and renewed

D

ground and polished


正确答案： A
解析： 暂无解析

第5题：

单选题
A viscosity regulator used for an engine is usually provided in order to （） for an engine burning heavy fuel oil.
A

regulate the fuel supply

B

maintain a constant fuel viscosity at the fuel valves

C

maintain efficient cooling

D

alter the fuel density


正确答案： B
解析： 暂无解析

第6题：

单选题
Turbocharging of marine diesel engine is achieved by two distinct methods, （） termed the constant pressure and the pulse system.
A

respectable

B

respectful

C

respective

D

respectively


正确答案： D
解析： 暂无解析

第7题：

单选题
One of the purposes for water cooling the exhaust manifold in marine diesel engine is to （）
A

reduce lube oil temperature

B

raise exhaust temperature reduce

C

excessive heating of engine room

D

reduce load on cooling water pump


正确答案： C
解析： 暂无解析

第8题：

单选题
Most troubles likely to occur with marine diesel engine can, if located in time, be remedied with no difficulty and many can be （）if the engine is maintained with a high sense of responsibility to the people on the part of the motormen and engineers.
A

found out

B

eliminated

C

avoided

D

lowered


正确答案： C
解析： 暂无解析

第9题：

单选题
The diesel engine exhaust gas bypass, as fitted with some waste heat boilers, is installed to （）
A

prevent engine back pressure at heavy loads

B

increase total engine efficiency at low loads

C

prevent boiler corrosion at low engine loads

D

improve engine fuel consumption at any load


正确答案： C
解析： 暂无解析

第10题：

单选题
What color exhaust will be exhibited when a slow speed two-stroke/cycle main propulsion diesel engine, designed to operate on light and heavy fuel oil, is operated on insufficiently preheated heavy fuel oil?（）
A

White

B

Black

C

Blue

D

Clear


正确答案： B
解析： 暂无解析

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