正确答案: D
舵杆与舵叶法兰结合面贴紧和法兰连接螺栓中至少有4个紧配螺栓
题目:舵杆工作轴颈与舵叶轴承孔同轴度检验前,先将舵杆与舵叶组装在一起,并使()。
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学习资料的答案和解析:
[单选题]废气锅炉的排气流动阻力不能过大,因为二冲程低速柴油机增压器后的排气背压规定一般不宜超过()。
A,B,C均可
[单选题]活塞裙外圆与活塞杆外圆的同轴度偏差应不大于()。
0.10mm
[单选题]厚壁瓦欲自轴承座内盘出时,应从()盘出。
瓦口较厚端
[单选题]防止增压器涡轮端壳体腐蚀的方法是()。
提高冷却水进口温度
[单选题]Fuel is delivered into the combustion space by ().
an injection system
[单选题]The conclusion that mechanical efficiency is always () 100 percent is correct.
less tha
[单选题]With the shell and cap assembled as for running, a check must be made that the clearance between the cap and the housing ().
are suitable
[单选题]Friction developing between the moving parts of a governor, governor linkage and control valve will cause the governor to ().
fail to react to small speed changes