半夏泻心汤的组成药物,由除小柴胡汤去柴胡、生姜外,还有()
A.黄连、干姜
B.栀子、生姜
C.黄芪、煨姜
D.黄柏、柴胡
E.黄连、生姜
参考答案:A
下图为一简谐波在t=0时,对应的波形图,介质中的质点P做简谐运动的表达式为y=4sin5xl,求该波的速度,并指出t=0.3s时的波形图(至少画出一个波长)。
A person bought a ticket to a ball game for $15 and later sold the ticket for $60. What was the percent increase in the price of the ticket ?()
A.25%
B.
C.75%
D.300%
E.400%