正确答案: C
实现校中技术要求
题目:活塞运动部件与固定件相互位置校中是为了()。
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学习资料的答案和解析:
[单选题]动力装置长期在部分负荷下工作,废热锅炉排烟温度t2过低,对废热利用设备的维护管理是()。
不利的
[单选题]在更换液压拉伸器的密封环时,应尽量使用()将活塞和油缸分离。
压缩空气通过泄放旋塞孔
[单选题]平板形舵可作成()。Ⅰ.平衡舵;Ⅱ.穿心舵轴平衡舵;Ⅲ.半平衡舵;Ⅳ.不平衡舵;Ⅴ.完全平衡舵。
Ⅰ+Ⅲ+Ⅳ
[单选题]Among the rings of a piston the () one is subjected to the greatest load and temperature.
top
[单选题]The position of the piston parts in relation to each other is secured by means of () and a dowel pin in the crown.
machine-turned recesses
[单选题]Lube oil filters remove contaminants more efficiently if the oil being filtered is ().
heated to reduce viscosity
[单选题]In a simple mechanical governor, the ().
flyweight centrifugal force is balanced by spring force