截面形状复杂的柱，允许采用有内折角的箍筋。( )
参考答案：错
局部通风机吸风口（）范围内不得堆积物料。
A、8m
B、2m
C、10m
The Emperor’s clothes became the talk of the whole city, _________?
A．did it
B．didn’t it
C．did they
D．didn’t they
