防止增压器涡轮壳体腐蚀的方法是（）。

【名词&注释】

冷却水(cooling water)、人身事故(fatal accident)、增压器涡轮壳(supercharger turbo shell)

[单选题]防止增压器涡轮壳体腐蚀的方法是（）。

A. 降低冷却水进口温度
B. 选用低硫燃油
C. 选用耐蚀材料
D. 选用非冷却式的增压器

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学习资料：

[单选题]在船上吊缸检修时，为了安全不仅要遵守吊运安全规则，而且（）。

A. 严禁超重吊运
B. 起吊前绑扎牢靠
C. 防止发生人身事故
D. 吊运中应平稳

[单选题]目前铁梨木艉轴承最好的代用材料是（）。

A. 赛龙
B. 尼龙
C. 卡普龙
D. 层压胶木

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A. water leakage
B. steam leakage
C. oil leakage
D. air leakage

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A. clogged filters
B. poor combustion
C. overloading of the diesel
D. shock of fuel line

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A. steel guides
B. steel shells
C. steel bearing caps
D. pig iro

[单选题]Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of （）.

A. fuel oil vapor at the sludge tank vent
B. unburned fuel vapors in the scavenge air receiver
C. lube oil vapors in the crank case
D. lube oil vapors in the engine room

[单选题]On a medium-speed main propulsion diesel engine, the crank-pin or crank journal bearings receive lubricating oil from （）.

A. a spindle lubricator
B. an oil jet
C. internal splashing
D. drilled passages in the crankshaft

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