编号为15的堆取料机,它的设备型号为()。
A.KL-4
B.KL-4A
C.DQL600*1000*30
参考答案:C
通常情况下,信息插座的安装位置距离地面的高度为______cm。
A.10~20
B.20~30
C.30~50
D.50~70
If I had tried my best last term, I ________more progress then.
A.could make
B.would make
C.must have made
D.could have made