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【多选题】
如图,在直角△abc的三个顶点处,各有一条固定的长直导线,导线均垂直△abc所在平面,a、b处导线中通有大小和相同的电流I 0 ,c处导线中的电流为I,下列说法正确的是( )A.
若I与I 0 方向相同,则a处导线受到的方向可能与bc边平行
B.
若I与I 0 方向相反,则a处导线受到的方向可能与bc边平行
C.
若I与I 0 方向相反,则a处导线受到的方向可能与bc边垂直
D.
若a处导线受到的方向与bc边平行,则电流大小必满足I>I 0
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【单选题】听力原文：W: Tony, who are the street people? How did they get to be living in the street? M: Well, some of them lost their jobs, some of them have mental problems, and some of them drink. Q: Which of the ...
A.
Unemployment.
B.
Family breakup.
C.
Mental problems.
D.
Drinking.
【单选题】听力原文：W: David, who are the street people? How did they get to living in the street? M: Well, some of them lost their job, some of them have mental problem, and some of them drink. Q: which of the foll...
A.
Unemployment.
B.
Family break-up.
C.
Mental problem.
D.
Drinking.
【单选题】How did people in the early Ice Age keep warm?
A.
By living in large groups.
B.
By using sand as insulation.
C.
By keeping fires burning constantly.
D.
By facing their homes towards the south.
【单选题】听力原文：W: Tony, who are the street people? How did they get to be living in the street? M: Well, some of them lost their jobs, some of them have mental problem, and some of them drink. Q: Which of the f...
A.
Unemployment.
B.
Family breakup.
C.
Mental problems.
D.
Drinking.
【单选题】听力原文：W: Tony, who are the street people? How did they get to be living in the street? M: Well, some of them lost their jobs, some of them have mental problems, and some of them drink. Q: Which of the ...
A.
Unemployment.
B.
Family breakup.
C.
Mental problems.
D.
Drinking.
【简答题】How did the living prepare to dance the Macabray?
【单选题】When living in Beijing, how did Lang Lang go to school?
A.
On foot.
B.
By bus.
C.
On his father's bicycle.
D.
By train.
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