《铁路边界噪声限值及测量方法》中的铁路边界系指距铁路外轨轨道中心线( )处。
A.25m
B.30m
C.35m
D.40m
参考答案:B
---I think teenagers should be allowed to have part-time jobs.
---_______. Studying is more important for them.
A.I agree.
B.I disagree
C.I don’t know
D.Me, too
“某地半年多雨,半年少雨,在雨季里,大草原一片葱绿,生机盎然。到了旱季,天气燥热,满目枯黄”。你认为某地的气候类型是[ ]
A、热带雨林气候
B、热带沙漠气候
C、温带季风气候
D、热带草原气候