援外物资经查验合格后，检验检疫机构出具检验检疫证书。 ( )
参考答案：对
Maybe if I_____ science, and not literature then, I would be able to give you more help.
A．studied
B．wouldstudy
C．hadstudied
D．wasstudying
沉降罐投产操作前要做好哪些准备工作？
