对保障性住房建设,减免税收,减半收取各种行政事业性收费和政府性基金。()
参考答案:错
Their answers are exactly the same. One of them ___ from the other.
A.must copy
B.must have copied
C.should copy
D.should have copied
槽上()系统包括:贮矿场、贮矿仓、焦仓、槽上运料设备和卸料设。
A.装料
B.上料
C.供料