《建筑抗震设计规范》中规定框架一抗震墙结构的抗震墙厚度不应小于:()
A.100mm
B.120mm
C.140mm
D.160mm且不小于层高的1/20
参考答案:D
We do not know how astronauts can ____ when they spend months in space without the protection of the atmosphere.
A.get off
B.get up
C.get along
D.get in
分辨能力