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【简答题】
国家环境质量标准是由谁制定的？
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举一反三
【单选题】听力原文：W: I didn't see you at the company picnic last weekend. You had such a good time at the last one, so I was surprised when you didn't show up for this one. M: I had planned to go, but when I got u...
A.
He didn't enjoy the previous one.
B.
He thought it was going to rain.
C.
He had some other weekend plans.
D.
He wanted to stay home instead of going out.
【简答题】中间加挂游车的跨装车组通过 道岔时,不得推送调车,以防脱轨。遇设备条件不允许或尽头线时,可以 的速度,匀速推进。
【简答题】Perform as a tour leader. After arriving at the hotel, you start to process the registration of your group’s stay at front desk. (在酒店前台为团队办理入住登记手续) Your dialogue with the front desk staffer will inclu...
【单选题】中间加挂游车的跨装车组通过９号及其以下道岔时，不得推送调车。遇设备条件不允许或尽头线时，可以不超过（）km/h的速度匀速推进。
A.
3
B.
5
C.
10
D.
15
【简答题】Moring Call:
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