（） is used for washing and drinking.

【名词&注释】

导热性(thermal conductivity)、燃气轮机(gas turbine)、中速柴油机(medium speed diesel engine)、燃气动力装置(gas power plant)

[单选题]（） is used for washing and drinking.

A. The ballast system
B. The salt water system
C. The bilge system
D. The domestic system

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学习资料：

[单选题]燃气动力装置^{(gas power plant)}在海船上使用最多的是（）。

A. 低速柴油机
B. 中速柴油机
C. 高速柴油机
D. 燃气轮机

[单选题]赛龙艉轴承材料的缺点是（）。Ⅰ.弹性低；Ⅱ.导热性差；Ⅲ.不耐高温；Ⅳ.不耐磨；Ⅴ.寿命低。

A. Ⅱ＋Ⅲ
B. Ⅰ＋Ⅱ＋Ⅳ＋Ⅴ
C. Ⅲ＋Ⅳ＋Ⅴ
D. Ⅱ＋Ⅲ＋Ⅳ

[单选题]铁梨木艉轴承和层压胶木艉轴承的极限间隙可近似等于（）倍的安装间隙。

A. 2
B. 3
C. 4
D. 5

[单选题]If the atomizer holes are enlarged beyond the makers recommended size, the atomizer must be （）.

A. repaired
B. replaced
C. replenished
D. repeated

[单选题]Prior to lighting off a cold automatically fired auxiliary boiler, you should （）.

A. check and regulate the water level
B. close the air cock once fires are lit
C. blowdown the gage glass
D. crack the steam stop to assure protective steam flow

[单选题]Bottom blow valves are installed on auxiliary water-tube boilers to （）

A. remove suspended and precipitated solids from the boiler water
B. completely drain the boiler in an emergency situation
C. prevent hardened scale deposits in the water drum
D. remove floating impurities from the oily water surface

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