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【多选题】
城市轨道交通界限可分为A.
车辆界限
B.
设备界限
C.
建筑界限
D.
道路界限
手机使用
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新浪微博
分享QQ
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反馈参考答案：
举一反三
【单选题】Don’t return the video to Peter, I _____ it.
A.
don’t watch
B.
won’t watch
C.
haven’t watch
D.
wasn’t watching
【简答题】Unit 4 -2.mp3
【单选题】Unit 04-10.mp3: T he price is firm only if
A.
p rice of raw materials don ’ t change
B.
p rice of labor cost don ’ t change
C.
b oth A and B
【单选题】Unit 04-6.mp3: T he seller justifies the price for its_____________
A.
Quality superiority
B.
Technological superiority
C.
M aterials superiority
【单选题】Why doesn’t Lu Jingjing answer her parents’ video calls?
A.
She is too busy and has no time for video chats.
B.
She doesn’t want her parents to worry about her.
C.
It’s not allowed to make a video call from the hospital.
D.
There is no network signal at the temporary mobile hospital.
【单选题】Unit 6-1.mp3: T he machine should be well protected against ____________
A.
d ampness and moisture
B.
r ust and shock
C.
both A and B
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