2022海船船员考试题库船舶动力装置题库考前点睛模拟考试108

1. [单选题]柴油机气缸盖的结构特点是（）。Ⅰ.结构复杂；Ⅱ.阀件多；Ⅲ.孔道较多；Ⅳ.受热不均；Ⅴ.壁厚不均。

A. Ⅱ＋Ⅲ＋Ⅴ
B. Ⅰ＋Ⅲ＋Ⅴ
C. Ⅰ＋Ⅲ
D. Ⅲ＋Ⅴ

2. [单选题]柴油机气缸盖产生裂纹的根本原因是（）造成的。Ⅰ.过大的热应力；Ⅱ.应力集中；Ⅲ.热疲劳；Ⅳ.机械疲劳；Ⅴ.综合疲劳。

A. Ⅰ＋Ⅱ＋Ⅲ
B. Ⅰ＋Ⅱ＋Ⅴ
C. Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ
D. Ⅲ＋Ⅳ

3. [单选题]活塞运动部件失中不仅加剧磨损，而且还会产生（）等故障。

A. 活塞环折断^{(piston ring breaking)}
B. 敲缸、拉缸
C. 自动停车
D. 功率不足

4. [单选题]测量发现，活塞在近上、下止点位置时，活塞在气缸中均偏左或均偏右的极端位置（活塞与气缸间隙为零，而一侧间隙最大），这是由于（）原因所致。

A. 导板倾斜
B. 导板与气缸中心线距离过大或过小
C. 导板与活塞中心线的距离过大或过小
D. 滑块与气缸中心线距离过大或过小

5. [单选题]带有匙形键槽且根部有适当圆角的单螺旋桨轴或艉轴，其检验间隔期规定为（）。

A. 2年
B. 3年
C. 4年
D. 5年

6. [单选题]Care and cleanliness are required when installing diesel fuel filters （）.

A. to prevent the fuel system from becoming air-hound
B. to prevent the fuel system becoming clogged with dirty particles
C. both of the above
D. to prevent the lubricating oil from leaking out of the filter element

7. [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

8. [单选题]The sequence of parts in a generally used fuel oil supply system for a main engine is （）(1)tanks in the double bottom(2)centrifuges(3)service tank(4)settling tank(5)viscosity regulator

A. (1)-(2)-(4)-(3)-(5)
B. (1)-(4)-(2)-(3)-(5)
C. (1)-(3)-(2)-(4)-(5)
D. (1)-(5)-(4)-(2)-(3)

9. [单选题]The shells are secured by means of bearing caps and studs, the necessary clearance being provided by means of （） of different thickness.

A. shims
B. packing
C. glands
D. washer

10. [单选题]Engine displacement is equal to the cylinder （）.

A. area times the stroke
B. area times the stroke, times the number of cylinders
C. volume times the stroke
D. volume times the stroke, times the number of cylinder

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