对短轴系轴线校中理解错误的是（）。

【名词&注释】

环氧树脂(epoxy resin)、螺旋桨直径(diameter of a propeller)

[单选题]对短轴系轴线校中理解错误的是（）。

A. 刚惟好
B. 挠度小
C. 对轴系偏差敏感
D. 对轴系偏差不敏感

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学习资料：

[单选题]串联连接系统的可靠度（）组成该系统各部件的可靠度。

A. 等于
B. 大于
C. 小于
D. 大于、等于

[单选题]船轴表面裂纹可采用（）进行无损检测。Ⅰ.着色探伤；Ⅱ.煤油-白粉；Ⅲ.磁粉探伤；Ⅳ.超声波探伤；Ⅴ.X射线探伤。

A. Ⅱ＋Ⅲ
B. Ⅰ＋Ⅲ
C. Ⅰ＋Ⅲ＋Ⅴ
D. Ⅰ＋Ⅱ＋Ⅲ

[单选题]沿海及内河的船舶，其螺旋桨直径D（）m时，螺旋桨和艉轴允许采用有键环氧树脂连接。

A. A．＜1.5
B. B．＞1.5
C. C．＜4.5
D. D．＞4.5

[单选题]Be sure to make the engine turn by （） before starting and after stopping .

A. steering gear
B. turning gear
C. steering wheel
D. turning cycle

[单选题]For a continuous operation diesel engine, a duplex filter unit would be the best arrangement because （）.

A. changing filter elements would not interrupt engine operation
B. filtering occurs twice in each pass of oil through the system
C. clogging will not occur
D. dropping pressure is half of that through a single filter unit

[单选题]In order to reverse the rotation of a two-stroke/cycle loop scavenged, direct reversing, propulsion diesel engine, the cam positions must be changed for the （）.

A. starting air and fuel pumps
B. piston cooling pumps
C. exhaust valves
D. all of the above

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