歌舞娱乐、放映、游艺场所布置在地下一层或四层及以上楼层时,一个厅、室的建筑面积不得大于().
A.200m2
B.300m2
C.400m2
D.450m2
参考答案:A
The UN should _____ the establishment of Iraqi government after the war, I think.
A.take part in
B.play a leading role in
C.play a role among
D.play a important part for
中深孔合格炮孔的角度误差不得超过()。
A.±1°
B.±2°
C.±3°