正确答案: D
Ⅰ+Ⅱ+Ⅳ
题目:引起增压器振动的原因有()。Ⅰ.轴承损坏;Ⅱ.转子弯曲变形;Ⅲ.转子冷却不良;Ⅳ.转子不平衡;Ⅴ.油泵安装不良。
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学习资料的答案和解析:
[单选题]船舶有效功率是指船舶航行时()的功率。
克服船体阻力消耗
[单选题]曲轴的臂距差对应着曲柄的变形,若臂距差小于零,则在水平平面内曲柄呈()。
左拱形
[单选题]测量曲轴臂距差时,曲轴旋转一周,可依次测得臂距值为()。
L上、L右、L下、L左
[单选题]轴承密封装置防蚀衬套进行水压试验时()。
不允许任何渗漏
[单选题]螺旋桨桨叶表面的缺陷主要有()。Ⅰ.穴蚀和腐蚀;Ⅱ.裂纹;Ⅲ.断裂;Ⅳ.污损;Ⅴ.碰撞。
Ⅰ+Ⅱ+Ⅲ+Ⅳ
[单选题]() of the A-frames there is a strong cast iron frame called the scavenging air box.
At the top
[单选题]With the crank in position in the engine, some measurements can be taken by a special bridge gauge and ().
a feeler gauge
[单选题]In the closed cooling system, the water ().
is made to circulate within the system
[单选题]A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST ().
reduce the engine load