问题
单项选择题
磁感应线上任一点的（）方向与该点的磁场方向一致。
A.曲线
B.切线
C.直线
D.S极
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
磁感应线上任一点的（）方向与该点的磁场方向一致。
A.曲线
B.切线
C.直线
D.S极
参考答案：B
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| One night a man came to my house. He told me,"There is a family with eight 1 . They have not eaten for days."After I asked him where the family was. I took some 2 with me and left. When I finally got to that family, I 3 those little children were too hungry to say 4 . There was no food to the mother. She took half of it, and then 5 . When she returned, I asked her," 6 did you go?" She gave me this simple 7 ,"To my neighbors --- they are also 8 !" I was not surprised that she gave, because poor people are always very kind. But I was surprised that she knew her 9 were hungry. Usually, when we are in trouble, we always 10 ourselves first, and we have no time for others. | ||||
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