（）在同一罐内，人员与物料混合提升。
A、可以
B、禁止
C、无妨碍
参考答案：B
——Where did you come across our chemistry teacher ?
------ It was in the supermarket ______ I purchased mooncakes.
A．that
B．which
C．where
D．when
笼式异步电动机定子三相绕组的VI、V2两线是第（）相绕组的两端（旧标号是D2，D5）。
A.1
B.2
C.3
D.4
