58岁患者，突发呼吸困难，两肺哮鸣音，既往病史不详。应如何选药（）
A.哌替啶
B.异丙肾上腺素
C.吗啡
D.西地兰
E.氨茶碱
参考答案：E
Prior to expiration, the maximum value of an Americana call option and an American put option, respectively, is closest to the: American put optionAmerican call option ①A. Exercise price Exercise price ②B. Exercise price Underlying price ③C. Underlying price Exercise price
A．
B．
C．
商品条码放大系数大于2.0或小于的视为不合格（）
A.0.5
B.0.9
C.1
D.0.8
