含有川芎、赤芍、桃仁、红花、当归的方剂是 A.桃核承气汤 B.复元活血汤 C.血府逐

有价证券按发行主体的不同可分为( )。

A．政府证券

B．无价证券

C．公司证券

D．金融证券

E．凭证证券

For a European call option X(strike price)=25 and a European call option X=30 on the same stock with the same time to expiration, it is true that, when the 30 call is at or in the money, the pest statement we can make is:（）

A. the value of the 25 call is greater than or equal to the value of the 30 call.

B. the 30 call is worth at least as much as the 25 call.

C. the value of the 25 call is greater than the value of the 30 call.

当节气门开度变小时，由于气流流速升高，进气压力反而降低，膜片的应变力减小，应变电阻的变化率（），电桥输出电压降低，经放大后，传感器输人ECM的信号电压也降低。

A.增大

B.减小

C.保存不变

D.波动

请解释“人的全面发展学说科学地解决了教育目的价值取向的矛盾”的意思。