正确答案: C
12
题目:发动机连续起动次数越多其机动性越好,对每台可换向的主机在冷机条件下应不少于()次。
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学习资料的答案和解析:
[单选题]A common trouble with the fuel pump plungers or fuel valve spindle is ().
oil leakage
[单选题]The pump has a constant stroke and the amount of fuel delivered is regulated by rotating () which has a specially arranged helical groove cut into it.
the pump plunger