在外科临床中最常见的栓塞是()。
A.空气栓塞
B.血栓栓塞
C.脂肪栓塞
D.细菌栓塞
E.羊水栓塞
参考答案:B
在建筑装修过程中,在楼面上加铺木地板,则楼板增加了( )。
A.浅荷载
B.面荷载
C.集中荷载
D.水平荷载
The control lever for the mechanical disengaging apparatus in a lifeboat shall().
A.be painted bright red
B.be secured to a permanent part of the lifeboat structure
C.have the area surrounding the lever painted white
D.All of the above