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听力原文：M: Are you the head resident? W: Yes. M: I'm Bill Miller. I'm here because I want to change roommates. W: Really? That surprises me. I thought that you and David were good friends. M: We were. You see, we knew each other before. We are from the same home town, but it looks like we had different reasons for coming to col- lege. W: How so? M: Well, David is really into having fun, which is great. But he has so many people in our room all the time that 1 can't study. And the stereo is on constantly. W: Have you talked to him about it? M: Yes, but he just doesn't take me seriously. W: I see. M: Miss Todd, I have to study. I'm on scholarship. David isn't. W: Okay. Here's what we can do. Let me talk to David, and then you see how it goes. Just one week. What do the speakers mainly discuss?A.
The man wants to get authorization for a room change.
B.
The man is worried about his friendship with his roommate.
C.
Then man needs a scholarship to continue living in the dormitory.
D.
The man wants the head resident to talk to David for him.
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【多选题】“井下进行电气作业时，不遵守规程规定”必须停止作业，可能发生的严重违章行为有（）。
A.
电工检修电气设备不执行“三人联锁”（不填联锁单或监护人不在现场）
B.
带电检修、搬迁电气设备和电缆
C.
电工作业时不检查瓦斯浓度，不带便携
D.
电工使用的验电笔与电源电压等级不相适应
E.
操作高压电气设备主回路时，操作人员不戴绝缘手套，不穿电工绝缘靴或不站在绝缘台上
F.
非电气检修人员操作、检修电气设备
【多选题】变（配）电所进行倒闸操作应当注意哪些（）。
A.
必须办理操作票手续，并1人操作、1人监护
B.
雷雨时，严禁进行倒闸操作和更换保险丝
C.
值班人员装卸高压熔断电器，应当停电、验电和放电，并穿绝缘胶鞋、戴绝缘手套
D.
用手拉、合刀闸开关，脸部不准正对开关
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