闸板防喷器整体翻转使用同样可以封井。
参考答案：错
The police ____ the murderer everywhere when he suddenly appeared in a theatre.[ ]
A. is searching for
B. were searching for
C. are searching for
D. was searching for
使用水浴槽的体外冲击波碎石术（ESWL）采用连续硬膜外麻醉时，阻滞的最低平面需达到（）
A.T2
B.T4
C.T6
D.T8
E.T10
