Before being used the fuel service tank should be drained of

【名词&注释】

螺旋桨(propeller)、环氧树脂(epoxy resin)、水压试验(hydrostatic test)、气缸套(cylinder liner)、活塞环槽(piston ring groove)、活塞环弹力(elasticity of piston ring)

[单选题]Before being used the fuel service tank should be drained of （）.

A. soda solution
B. mechanical impurities
C. ballast
D. water and residual

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学习资料：

[单选题]船上吊缸检修中一般不需进行（）。

A. 气缸盖、气缸套的0.7MPa水压试验
B. 气缸套、活塞环、活塞环槽^{(piston ring groove)}的磨损测量
C. 天地间隙、搭口间隙的测量
D. 活塞环弹力^{(elasticity of piston ring)}检验

[单选题]航行中，柴油机曲轴发生断裂事故，条件许可时可采用（）应急措施进行修理。Ⅰ.金属扣合工艺；Ⅱ.焊接；Ⅲ.局部更新；Ⅳ.铆接；Ⅴ.粘接。

A. Ⅱ
B. Ⅱ＋Ⅳ
C. Ⅲ＋Ⅳ
D. Ⅰ＋Ⅴ

[单选题]小型船舶的螺旋桨直径D＜1.5m时，螺旋桨和艉轴允许采用（）方式连接。

A. 有键环氧树脂
B. 无键环氧树脂
C. 机械连接
D. 油压套合连接

[单选题]（） should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipment.

A. The watch keeping personnel
B. The chief engineer
C. The person on a bunker barge
D. Any of the above

[单选题]The projection on a shaft designed to change circular motion into up and down or back and fore motion is called （）.

A. wheel
B. crankshaft
C. running gear
D. cam

[单选题]Which of the following conditions could cause the feed pump for an auxiliary boiler to lose suction?（）

A. Increased suction head pressure
B. Decreased feedwater temperature
C. Pump recirculating line being open too much
D. Excessive feedwater temperature

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