临界风速
参考答案:
塔产生共振时的风速。
27. The number of traffic accidents caused by drinking is ________ as the number of those caused by non-drinking driving.
A.twice as many
B.many as twice
C.as twice large
D.twice as large
从国家最高决策权来说,英国的公共决策体制属于()。
A.议会制
B.总统制
C.委员会制
D.首长制