In a commonly used fuel oil system, the oil is stored in tan

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[单选题]In a commonly used fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.

A. a service tank
B. a settling tank
C. an expansion tank
D. a double bottom tank

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学习资料：

[单选题]总偏移是（）。

A. 从曲轴输出端法兰开始平轴，在艉轴首端法兰处所测得的偏移值
B. 从艉轴首端法兰开始平轴，在曲轴输出端法兰处所测得的偏移值
C. A或B
D. 以曲轴输出端法兰为基准测得的偏移值

[单选题]舵杆上有（）条细小的纵向裂纹时可以钳工修磨。

A. 1～2
B. 2～3
C. 3～4
D. 4～5

[单选题]As for a diesel engine, lack of combustion air may be due to （）.

A. fouling turbine
B. fuel pump faults
C. lubrication failure
D. excessive cooling

[单选题]Before starting the engine the air bottle should be （）.

A. pumped up
B. loaded
C. discharged
D. opened

[单选题]Either a low injection pressure or a leakage of piston rings is able to lead （）.

A. a high exhaust temperature
B. a high smoky exhaust
C. a high output
D. a high compressio

[单选题]It is well known that good lubrication will （） the bearings from becoming overheated.

A. present
B. prevent
C. avoid
D. provide

[单选题]Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler, could result in （）

A. increased fuel consumption
B. increased feed water consumption
C. fuel pump failure
D. combustion control system failure

[单选题]Diesel engines are considered safer than gasoline engines because（）.

A. they are more heavily built
B. the fuel used is less volatile
C. they can be easily reversed
D. they operate at a lower speed

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