强夯地基施工,锤重及落距分别不宜小于______。
A.6 t、6 m
B.8 t、6 m
C.10 t、4 m
D.4 t、6 m
参考答案:B
在△ABC中,若A=2B,则a等于( )
A.2bsinA
B.2bcosA
C.2bsinB
D.2bcosB
----How did you get the MP4, from a shop or by phone?
----________. I always like shopping online.
A.None
B.Neither
C.Both
D.All