轴类零件的装夹方法有多种,根据加工性质而定。如果轴的台阶较多,位置精度较高,应选用()装夹。
A.两顶尖间
B.一夹一顶
C.专用夹具
D.组合夹具
参考答案:A
用所给词的适当形式填空
小题1:I am ______(surprise) at the news. What about you?
小题2:When I passed the driving test, I thought I was the____(luck) person in the world.
小题3:The little boy is ______(kind) to his classmates, so nobody likes him.
小题4:What do you think about the air __________(pollute) in your hometown?
小题5:Danny and Daniel are brothers, and their____(wife) are sisters. That’s interesting.
小题6:Lucy and Lily are planning how to celebrate their parents’ fifteen years of______ (marry).
小题7:The fans screamed with(excite)as soon as the Li Yuchun came to the stage.
小题8:The band played many songs, (include) some of my favourites.
小题9:The singer sang so well that all of the audience couldn’t stop (clap).
小题10:He is an _____ ___(experience) teacher. He can always make his class lively and interesting.
高低压同杆架设,在低压带电线路上工作时,应先检查与高压线的距离,采取防止高压线接地的措施。