In each cylinder cover is a large central opening for mounti

【名词&注释】

螺旋桨(propeller)

[单选题]In each cylinder cover is a large central opening for mounting （）

A. the indicating cock
B. the starting valve
C. air inlet valve
D. the exhaust valve

查看答案&解析 查看所有试题

学习资料：

[单选题]字头销外圆表面的过度磨损常采用（）工艺修复。

A. 镀镍
B. 镀铁
C. 镀铬
D. 镀锌

[单选题]轴系校中计算中的热态是指（）。

A. 计及轴承温度的影响
B. 计及活塞运动部件的动态负荷变化的影响
C. 计及轴系振动的影响
D. 计及螺旋桨的附连水质量

[单选题]The hand steering is a method by which the motion of the rudder is controlled with （）.

A. a motor-driven steering wheel
B. a pneumatic steering wheel
C. a hand-driven steering wheel
D. an electric steering wheel

[单选题]The lowest ring of a piston is （）.

A. a coil spring
B. a sealing ring
C. an oil distributor ring
D. main seal ring

[单选题]For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.

A. it has a longer power stroke
B. more air gets into the cylinder each stroke
C. it develops twice as many power strokes at the same speed
D. higher combustion pressure is developed

本文链接：https://www.51bdks.net/show/vro9kl.html