在正常状态下工作的零件,其磨损过程划分成()、正常磨损和()三个阶段。
参考答案:初期磨损;剧烈磨损
—Elle, _____, but your radio is going too loud.
—Oh, I’m sorry. I’ll turn it down right now.
A.I’d like to talk with you
B.I’m really tired of this
C.I hate to say it
D.I need your help
DRAPL在线轧机支撑辊更换时间为()分。
A:30;
B:40;
C:60.