买入股票认沽期权:收益有限,股价跌到0元时收益最大;损失有限,最大损失为()。
A.权利金
B.不确定
C.无限
D.签订期权合约时,期权合约标的股票的初始价格
参考答案:A
More than one ____ the people heart and soul. [ ]
A. officials has served
B. officials have served
C. official has served
D. officials have served for
华法令抗凝观察指标是()
A.APTT在正常值的2~3倍间
B.APTT在2~3秒
C.INR在2.0~3.0
D.以上均不对
E.INR在正常值的2~3倍间