含14元内酯环，6-位为甲氧基的药物为（）.
A．氟他胺
B．非那雄胺
C．左炔诺孕酮
D．丙酸睾酮
E．达那唑
参考答案：E
Jane, I have been told that you to America．Have you got everything right?
A．have traveled
B．travel
C．would travel
D．are traveling
液化石油气贮罐属于（）类压力容器。
A.一
B.二
C.三
D.四
