为防止混凝土浇筑时产生离析,混凝土自由倾落度不宜超过3m。
参考答案:错
The teacher suggested that we should do _____ what he did yesterday.
A.as
B.like
C.about
D.than
Thoms症临床用来检查哪一种畸型()
A.髋内翻
B.髋外翻
C.髋外展外翻
D.髋内收内旋
E.髋关节屈曲