It is very necessary that each cylinder （） before the char

【名词&注释】

润滑油(lubricating oil)、玻璃钢(frp)、橡胶套(rubber tubing product)、螺旋桨轴(propeller shaft)

[单选题]It is very necessary that each cylinder （） before the charged air is compressed.

A. is scavenged
B. is atomized with fuel oil
C. be scavenged
D. be atomized with fuel oil

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学习资料：

[单选题]当液压拉伸器的用油变质时，应采用（）清洗液压拉伸器的油腔。

A. A．碱性纯净油
B. B．纯净润滑油
C. C．纯净气缸油
D. D．纯净透平油

[单选题]水润滑式艉轴工作轴颈包覆（），非工作轴颈包覆（）。

A. 铜套/塑料
B. 橡胶套/塑料
C. 玻璃钢套/橡胶
D. 铜套/玻璃钢

[单选题]带有普通键槽的单螺旋桨轴^{(propeller shaft)}或艉轴其检验间隔期为（）。

A. 1年
B. 2年
C. 3年
D. 4年

[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]铁梨木舵承发生（）时应更换。

A. 过度磨损
B. 变形
C. 开裂
D. 裂纹

[单选题]（） in what position the engine stops there will always be at least one of the cylinders with its starting air valve open to admit compressed air to start the engine.

A. Because
B. Owing to
C. For
D. No matter

[单选题]The design of the connecting rod large end bearing is similar to that of the mainbearings Whats the meaning of "that" in the sentence above?（）

A. the connecting rod
B. large end bearing
C. the main bearing
D. the desig

[单选题]The most important factor that causes the wear of the engine parts is （）.

A. excessive heat
B. friction
C. oxidation
D. high pressure

[单选题]The total starting air capacity required for reversible main engines is to be sufficient for at least （）.

A. six consecutive starts
B. eight consecutive starts
C. ten consecutive starts
D. twelve consecutive start

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