正确答案: C

同一截面上局部螺距

题目：截面螺距是桨叶上（）的算术平均值。

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学习资料的答案和解析：

[单选题]Rotating flyweights acting against spring pressure make a simple type of （）.

governor

[单选题]With supercharging a larger mass of air is supplied to the cylinder by blowing it in under pressure, which is the best means to （） of the engine.

increase the power of

[单选题]Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished （）.

during the valve overlap period