一氯七氟丙烷
参考答案:2903772026
解析:
海关商品名称:一氯七氟丙烷海关编码:2903772026法定单位一:千克惠税:5.5%普税:30%增值税:17%
— _______ one and a half months enough for the project to be finished?
— I am afraid not. The professor is ill and only after he recovers ________ go on with it. [ ]
A. Is; he can
B. Are; he can
C. Is; can he
D. Are; can he
调节阀按照动力源可分为气动、液动、电动。按阀芯动作形式分为单行程和双行程。