法律制裁可分为( )。
A．刑事制裁
B．民事制裁
C．行政制裁
D．违宪制裁
参考答案：A,B,C,D
—I'm sorry, but there's no smoking room in this section on the train.
—Oh, I _____ that, and I won't smoke again. [ ]
A. don't know
B. won't know
C. didn't know
D. haven't known
采用奥107或奥122焊条焊接不锈钢与碳素钢焊接接头可以使焊缝金属获得双相组织。( )
