当加工空气量增加时，塔内上升蒸汽增加，主冷内冷凝的液体量（）
A、增加
B、减少
C、无变化
参考答案：A
任何单位和个人，不得转借、涂改、损毁、买卖或伪造税务登记证件。（）
--Would you like to go to the watertown with us this weekend?
--Thanks. I there twice. I hope you have a good time there.
A. went B. have gone C. have been
