指出下列味同为辛，而气相异的
A．桂枝发表散寒
B．薄荷发表散热
C．附子补火助阳
D．石膏清热泻火
E．瓜蒌清肺化痰
参考答案：A,B,C,D
驱动桥的组成和功用是什么？
A continuous sounding of a fog-signal apparatus indicates（）.
A.the vessel is in distress
B.the vessel has completed loading dangerous cargo
C.it is safe to pass
D.the vessel is anchored
