《建设项目环境保护分类管理名录》根据建设项目对环境的影响程度,将环境影响分为( )三类。
A.重大影响 B.中度影响 C.轻度影响 D.影响很小
参考答案:A,C,D
根据句意用适当的介词填空.
1. Sally is often late _____ school.
2. Lisa,what are you listening _____ now?
3. I have to go _____ bed by 9:00 p. m.
4. Emily, what do you usually do _____ Sundays?
5. Peter often helps me _____ my lessons.
锅炉压力至10MPa开始洗硅,不符合该压力下硅含量标准也可允许升至下一级