刚性联轴器两轴的同心度要求严格,要求两对轮的圆周偏差不大于()mm ["0.04","0.07","0.055","0.06"]
用于捆绑设备的钢丝绳的安全系数应选() ["4","4.5","6","10"]
测量平面瓢偏时,百分表应架设得使表杆() ["与被测面垂直","与被测体轴线平行","与水平线平行","任意位置"]
新建输变电工程验收合格后,由工程建设部向工程质量监督机构申请质监,取得质量监督检查签证书。()
手锤的质量有0.25、O.5、()kg三种 ["0.75","0.8","1.0","1.5"]
主汽门,调速汽门设置予启阀的目的是()。