The bearing shell generally has （） for location and oil gr

【名词&注释】

冷却水(cooling water)、增压器涡轮(turbine wheel)

[单选题]The bearing shell generally has （） for location and oil grooves round the center of its axial length.

A. tips
B. tags
C. lips
D. key

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学习资料：

[单选题]防止增压器涡轮端壳体腐蚀的方法是（）。

A. 选用低硫燃油
B. 降低冷却水进口温度
C. 提高冷却水进口温度
D. 选用耐蚀材料

[单选题]如果两根中间轴连接法兰的位置处于两轴承间距的中间，则轴系会出现（）。Ⅰ.轴系挠度过大；Ⅱ.轴系难以准确对中；Ⅲ.安装不方便

A. Ⅰ+Ⅱ
B. Ⅱ+Ⅲ
C. Ⅱ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ

[单选题]As a heat engine,（） energy is the source of power by which the diesel engine can be operated.

A. electric
B. heat
C. mechanical
D. exhaust

[单选题]Generally the gudgeon pin is fully floating in both connecting rod small end and （）.

A. the crosshead
B. the crankshaft
C. large end
D. the piston bosse

[单选题]If the engine does not start on air, it may be due to （）

A. low compression of the fuel pumps
B. incorrect timing of fuel pumps
C. the starting air valves stuck
D. air-locks in fuel oil pipeline

[单选题]The crankshaft of diesel engine is supported by （）.

A. tension stretch
B. tie rods
C. through bolts
D. main bearing

[单选题]The fuel oil system for a diesel engine can be considered in two parts--the fuel supply and the （） systems.

A. fuel treatment
B. fuel combustion
C. fuel injection
D. fuel separating

[单选题]Temperature control valves installed in the jacket cooling water system of a diesel engine modulates the rate of water flow through the （）.

A. cooling water pump
B. nozzle cooling passages
C. cylinder jackets
D. heat exchanger

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