Care and cleanliness are required when installing diesel fue

【名词&注释】

螺旋桨(propeller)、续航力(endurance)

[单选题]Care and cleanliness are required when installing diesel fuel filters （）.

A. to prevent the fuel system from becoming air-hound
B. to prevent the fuel system becoming clogged with dirty particles
C. both of the above
D. to prevent the lubricating oil from leaking out of the filter element

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学习资料：

[单选题]为了满足船舶续航力的要求，船上必须设有（）。

A. 足够大的油、水舱柜
B. 足够大的主机功率
C. 足够大的载货舱容
D. A+B

[单选题]螺旋桨0.4R以内的缺陷（）修理。

A. 可焊补
B. 不可焊补
C. 一般不可焊补
D. 可采用喷焊

[单选题]Operating a diesel engine for prolonged periods, with a closed freshwater cooling system, at temperatures lower than the normal design temperature can cause （）.

A. the formation of sulfuric acid
B. a decrease in lube oil viscosity
C. a decrease in cooling water pH
D. a thermostat failure

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