硫化防水卷材大致可分为两种，一种为单纯的成卷硫化胶片，另一种是（）卷材。
参考答案：硫化胶片背面带粘着层
—We should wait ________ more minutes. I think Jeff will come soon .
—I’m afraid not . We have ________ time left , the plane is going to take off .
A．a few ; little
B．few ; a little
C．a few ; a little
D．few ; little
南京理工大学设有机械工程学院、化工学院、电子工程与光电技术学院等（）个专业学院。
A.10
B.13
C.18
D.15
