DRAPL在退火炉的正常作业时,炉子段单位张力为0.75~()㎏/㎜2
A:0.80;
B:0.9;
C:.095.
参考答案:C
The headmaster________a very good impression________the parents at the meeting.[ ]
A.got;with
B.took;in
C.made;on
D.did;on
清代斗拱尺度变小,这主要是由下列哪一个因素引起的()
A.强化装饰
B.减小用料
C.强化构件
D.控制造价