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【多选题】
浅埋暗挖法是一种综合施工技术，以下关于其特点的说法中正确的是（ ）。
A.
开挖后及时支护，封闭成环
B.
合理运用围岩的自承能力
C.
开挖时预留核心土，以支承开挖工作面
D.
与围岩共同作用形成联合支护体系
E.
采用多种辅助施工措施加固围岩
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【单选题】听力原文：M: Why didn't you stop when we first signaled you at the crossroads? W: Sorry, I was just a bit absent-minded. Anyway, do I have to pay a fine? Q: What do we learn from the conversation? (16)
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A.
Carry out instructions.
B.
Experience.
C.
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A.
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B.
Friends.
C.
Brother and sister.
D.
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查看完整题目与答案
【单选题】听力原文：W: May I help you? M: Do you sell alarm clocks in this department store? W: Yes, we have a wide selection. What exactly did you have in mind? M: I would like an alarm clock that will awaken me wi...
A.
In a supermarket.
B.
In a restaurant.
C.
In an appliance store.
D.
In a department store.
查看完整题目与答案
【单选题】听力原文：W: Peter, we will be boarding soon, are you sure you've taken everything necessary with you? M: Let me see…I have the air tickets, our passports and all the documents you need for the upcoming me...
A.
At home.
B.
At the airport.
C.
At the railway station
D.
At office.
查看完整题目与答案