正确答案: A

Distilled

题目：（） water is more expensive than fresh water It has high specific heat and low viscosity.

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学习资料的答案和解析：

[单选题]在高增压柴油机上，排气阀阀盘的温度可达（）℃。

A．650～800

[单选题]轴系理论中心线是（）的定位安装基准。

主机

[单选题]轴系若按直线校中，采用的校中工艺方法是（）。

A或B

[单选题]For an ordinary four-stroke engine the exhaust valves open （）.

before BDC

[单选题]Pistons of marine medium speed diesel engines may be made of （） in order to keep the weight down for balancing purpose at high speed.

aluminum alloy

[单选题]The piston rings are manufactured with a diameter （） the bore of the cylinder.

larger than