下列不属于热原性质的是（）。
A.挥发性
B.水溶性
C.耐热性
D.滤过性
参考答案：A
肠溶衣片
Which of the following combinations of options and underlying investments have similarly shaped profit/loss diagrams()
A. Long call option/short put option and long stock position.
B. Covered call and short stock/long call.
C. Short put option/long call option and protective put.
