变换炉催化剂进水处理方法有（）。
A、切除原料气
B、切除蒸汽
C、变换炉底部排水
D、用氮气吹干
参考答案：A, B, C, D
In no country _____ Britain, as has been mentioned,______ experience four seasons during the course of a single day.
A．other than; one can
B．apart from; one can
C．other than; can one
D．rather than; can one
设计弯曲模时，为保证成品件的弯曲角度，必须使模具的角度（）
A.与成品件角度一样大
C.比成品件角度大100
B.比成品件角度小一个回弹角
D.比成品件角度大一个回弹角
