正确答案: D
withi
题目:Before replacing a piston you should check the rings to see that all clearances and gaps are () the permissible tolerances.
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学习资料的答案和解析:
[单选题]保证和提高船舶动力装置的可靠性问题,将贯穿在()。Ⅰ.整个设计阶段;Ⅱ.整个制造阶段;Ⅲ.全部运转期间
Ⅰ+Ⅱ+Ⅲ
[单选题]连杆大小端轴承孔平台检验时应检查二者的中心线的()。
在垂直平面和水平平面内的平行度
[单选题]在柴油机已装活塞运动部件的情况下测量臂距值时,为了准确测量臂距值()。
盘车一周应测完5个数值
[单选题]船轴不包括()。
曲轴
[单选题]油润滑艉轴承的轴承材料一般选用()。
巴氏合金
[单选题]At the top of the A-frames there is a strong cast iron frame called ().
the scavenging box
[单选题]The main bearing shells often have a thin () of lead or indium to provide a layer giving protection against corrosion.
flash
[单选题]You increased the () to 150 tons that’s why the fuel oil ().
pumping rate;overflowed
[单选题]Which of the following statements concerning fire-tube boilers is correct?()
Combustion gases flow through the tubes