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【多选题】
按照国家与地方环境保护标准的相关关系的有关规定,对于国家环境保护标准已做规定的项目,以下可由省级人民政府制定的地方环境保护标准有()A.
国家标准的大气污染物排放标准
B.
国家标准的环境空气质量标准
C.
国家标准的地表水环境质量标准
D.
国家标准的水污染物排放标准
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举一反三
【简答题】跨区间无缝线路绝缘接头，采用厂制()钢轨。
【单选题】听力原文：W: Um, I'll read it for you. Yes, it's a large textile company that seems to import from abroad. That's odd, isn't it? What else?... A sales assistant is needed. They say the salary is really goo...
A.
Watching ads on TV.
B.
Listening to ads on radio.
C.
Reading job ads in a newspaper.
D.
Being interviewed for a job in a company.
【简答题】无缝道岔的钢轨绝缘接头采用()接头。
【单选题】听力原文： (25) The world's largest drug company is embroiled in a global controversy over whether it tested an unapproved drug on sick children in Nigeria without their full understanding. The case involv...
A.
Because this company sells drugs of low quality to Nigeria.
B.
Because of a medical accident in Nigeria.
C.
Because the company treated the Nigerian children with the experimental drug without full understanding.
D.
Because the company uses the experimental drug Trovan around the whole world.
【简答题】曲线线路上两股钢轨的接头应当对齐。()
【单选题】You have to read the manual carefully first, otherwise you______have difficulty using the cell phone.
A.
should
B.
will
C.
might
D.
may
【简答题】有缝线路轨道哪些位置不得有钢轨接头?
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