正确答案: C

crankpin

题目：Each crank is made up of two crank webs joined by a common（） to which the bottom endbearing is fitted.

查看原题 查看所有试题

学习资料的答案和解析：

[单选题]可靠性定义中所述及的“规定的条件”，包括（）。Ⅰ.环境温度、压力、湿度；Ⅱ.振动；Ⅲ.承受的负荷

Ⅰ+Ⅱ+Ⅲ

[单选题]柴油机运转中，根据（）现象可迅速判断柴油机燃烧室零件是否产生穿透性裂纹。Ⅰ.冷却水压力表指针波动；Ⅱ.冲车时有水珠喷出；Ⅲ.缸壁面有锈痕；Ⅳ.膨胀水柜水位变化；Ⅴ.曲轴箱油位升高。

Ⅰ＋Ⅳ＋Ⅴ

[单选题]船轴腐蚀主要发生在（）。

艉轴

[单选题]平板形舵具有（）的特点。Ⅰ.结构复杂；Ⅱ.便于修造；Ⅲ.舵效高；Ⅳ.舵效低；Ⅴ.成本低。

Ⅱ＋Ⅳ＋Ⅴ

[单选题]（） is made of a boss with separated blades mounted into it.

A variable pitch propeller

[单选题]As to the low speed diesel engine, if you want to change the coolant flow for a certain cylinder, you can regulate （）.

the outlet valve

[单选题]Excessive alkalinity of the water in an auxiliary boiler can cause （）.

caustic embrittlement of the boiler metal