2022海船船员考试题库船舶动力装置题库试题案例分析题答案(05.03)

1. [单选题]气缸盖底面在较高的（）等的恶劣条件下工作。Ⅰ.交变的机械负荷；Ⅱ.热负荷；Ⅲ.燃气腐蚀阀、孔；Ⅳ.冲刷；Ⅴ.冲击。

A. Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ
B. Ⅰ＋Ⅱ＋Ⅴ
C. Ⅱ＋Ⅲ＋Ⅳ
D. Ⅱ＋Ⅲ

2. [单选题]For one or two types of engine,the piston and rod can be withdrawn downwards from the cylinder into the crankcase and then out through （）.

A. the cylinder cover
B. the bottom of bed-plate
C. the sump
D. the crankcase door

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