正确答案: D
Ⅰ+Ⅱ+Ⅲ
题目:如果两根中间轴连接法兰的位置处于两轴承间距的中间,则轴系会出现()。Ⅰ.轴系挠度过大;Ⅱ.轴系难以准确对中;Ⅲ.安装不方便
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学习资料的答案和解析:
[单选题]推进装置的推进效率为推进轴上总有效功率与推进装置消耗的热量之比,因此它与()无关。
A+B
[单选题]测量曲轴臂距差时,要求在()情况下进行,以保证测量精度高和与实际情况相符。Ⅰ.柴油机正车运转;Ⅱ.柴油机倒车运转;Ⅲ.装表位置不变;Ⅳ.一次装表;Ⅴ.不更换表。
Ⅰ+Ⅳ
[单选题]Sea water is not directly used as a coolant for engines because of its ().
corrosive action
[单选题]Fins are installed on the generating tube surfaces in waste heat boilers to ().
increase the rate of heat transfer
[单选题]On most diesel engines, the governor controls the output speed by ().
controlling the amount of fuel injected into the cylinders