移动式压力容器压力表盘刻度极限值应当为最大工作压力的（)倍。
A. 1.5～2.0
B. 1.5～3.0
C. 2
D. 3
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Joe pushed the door ___ and went in quickly.
A. opened
B. open
C. opening
D. openly
某墙体设计配筋为φ14@200，现无φ14钢筋，拟用φ12按等面积原则代换，试计算代换后每米几根。
There are_________ of visitors to Kunming.
A. tens of thousands 2000
B. about ten of thousands
C. about three thousands
D. about three thousand
My brother lived at home before he got married, and so ___.
A. did I
B. had I
C. I had
D. I did
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