理论上说,进入吸收塔的烟气温度越低,越利于(),可以提高系统脱硫效率
A.粉尘的洗涤;
B.SO2的吸收;
C.亚硫酸氨的氧化
参考答案:B
— It’s difficult for the village children to cross the river for school.
— I hear a new bridge _______ over the river in a year.
A.was built
B.is being built
C.has been built
D.will be built
Excel具有人工分页的功能,它可以( )。
A.水平方向分页
B.垂直方向分页
C.在分页预览视图中,移动分页符
D.以上都对