题目内容
DCS操作画面中,M对N表示自动,对UTO表示手动（）
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One reason why colleges increase tuition and fees is that the state support is shrinking.（）
Nearly all the families can manage to meet the soaring tuition costs through various investment plans.（）
The only problem the students are facing at graduation is the dismal job market.（）
氨在空气中的允许浓度为303（）
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