体现“火郁发之”的方剂有()
A.麻杏甘石汤
B.清胃散
C.普济消毒饮
D.凉膈散
E.小青龙汤
参考答案:A, B, C, D
The students were made _____ in the exercise books.
A.hand
B.to be handed
C.to hand
D.handing
当信号在自由空间传播时,距离增加一倍,则衰减增加()。