配伍体现了苦寒直折的方剂是()
A.泻白散
B.凉膈散
C.黄连解毒汤
D.当归六黄汤
E.白虎汤
参考答案:C
33. You can, __________ the sky is clear, see as far as the old temple on top of the mountain, but not today.
A.when
B.where
C.though
D.Because
在R=9kΩ、L=36H、C=1μF三个元件串联的电路中,电路的暂态属于()。
A.非振荡
B.振荡
C.临界振荡
D.不能确定