正确答案: D
600~1000
题目:艉轴铜套的长度一般不超过()mm,否则应分段制造。
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学习资料的答案和解析:
[单选题]柴油机镀铬气缸套正常磨损率应在()mm/kh范围内。
0.01~0.03
[单选题]曲轴臂距差对应着曲柄的变形,若臂距差大于零,则在垂直平面内曲柄呈()。
A.塌腰形
[单选题]柱塞偶件配合面磨损后会导致()。Ⅰ.喷油压力下降;Ⅱ.喷油定时延后;Ⅲ.喷油量减少;Ⅳ.喷油时间延长。
D.I+Ⅲ
[单选题]柴油机在运行中一旦发生连杆螺栓断裂则可能导致()损坏。Ⅰ.活塞、连杆;Ⅱ.缸套;Ⅲ.机架;Ⅳ.曲轴。
Ⅰ+Ⅱ+Ⅲ+Ⅳ
[单选题]舵系固定件的中心线与船舶基线垂直,垂直度偏差不大于()。
1.0mm/m
[单选题]() the supercharge pressure is, () power an engine develops.
The higher;the more
[单选题]The process of loop scavenge is that the exhaust will be via ports () the air ports and controlled by the same piston.
adjacent to
[单选题]The shells are secured by means of bearing caps and studs, the necessary clearance being provided by means of () of different thickness.
shims
[单选题]The rate of heat transfer in a water-tube auxiliary boiler can be increased by ().
installing fins on the firesides of water-tubes