提倡用水泥混凝土()运输水泥混凝土拌合物,如用其它机械运输,运距不能太长
参考答案:搅拌运输车
Smoking hasn't been allowed in public places since May lst last year. It may be a good chance for people to
smoking.
A.put up
B.give up
C.pick up
D.look up
目标的性质()
A.层次性
B.网络性
C.信息化
D.多样性
E.具体性