被撤销文物拍卖资质的拍卖企业，由国务院文物行政部门收回《文物拍卖许可证》，企业（）日内不得申请文物拍卖资质。
A.4
B.3
C.2
参考答案：B
In a sport team each player has a clear role, and there are few occasions ______ members are confused or uncertain of their roles.
A．why
B．where
C．when
D．in which
某板坯连铸机切割辊道间距为1.35m，则该之间切割的最短定尺为（）。
A.1.35m
B.2.50m
C.2.70m
D.3.0mm
