()是指一切政党、国家机关、社会团体、企事业单位、公民都必须遵照法律的规定办事。
A.有法可依
B.有法必依
C.执法必严
D.违法必究
参考答案:B
My classmate, Li Ming, was highly praised for ___ a good deed.
A.doing
B.have done
C.having done
D.being done
物料管理有几种状态标志?