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【单选题】
按照科斯手段定理,大城市中产生空气污染是因为:( )A.
造成污染的人都没住在城里
B.
没有人对干净的空气有可实施的产权
C.
城市居民对干净空气不感兴趣
D.
城市居民偏好脏空气多于干净空气
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【判断题】道床板结后失去弹性并产生不均匀下沉 , 使整个线 路处于极其恶劣的工作状态下 , 加剧了轨道振动, 扣件松弛 , 以致发生病害 , 危及行车安全。
A.
正确
B.
错误
【单选题】People who love music, who can lose themselves in a book, or who can spend hours painting a picture of a mountain, know the deep satisfaction that can be found in art. It is not easy to express this s...
A.
Music has a power to catch all our attention.
B.
Art of high values can improve us as human beings.
C.
It's difficult to express our satisfaction from works of art.
D.
Simple entertainment is easy to understand and can give us pleasure.
【简答题】若出现网络不通情况,应该按照哪些步骤排查
【判断题】地铁控制保护区,是指地下车站和隧道结构外边线外侧五十米内,地面和高价车站、地面和高价线路结构外边线外侧三十米内,出入口、通风亭、冷却塔、主变电所、残疾人直升电梯等建筑物、建筑物外边线和车辆基地范围外侧十米内。
A.
正确
B.
错误
【单选题】Speaker A: I'd like to talk to Professor Smith, can you arrange it for me? Speaker B: ______
A.
Yes, of course. Would tomorrow morning be convenient for you?
B.
Why don't contact him yourself directly?
C.
I am afraid he can't see you unless you have an appointment with him.
D.
I don't think I have the right to arrange it for you.
【单选题】Can you telephone me at to arrange a meeting? [ ]
A.
convenience
B.
service
C.
request
D.
comfort
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