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【单选题】
第1题 如 图所示:有两根载有相同电流的无限长直导线,分别通过 x 1 =1 、 x 2 = 3 的点,且平行于 y 轴,则磁感应强度等于零的地方是( )A.
(A) 在x=2的直线上
B.
(B) 在x>2的区域
C.
(C) 在x<1的区域< /div>
D.
(D) 不在OXY平面上
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【单选题】When I was in high school, I had almost no individual identity left. I was a Hillcrest Husky and all other high schools were enemies. I was a wrestler and all the other sports were wimps. I was on the...
A.
rivalry
B.
prejudice
C.
conflicts
D.
all of the above
【单选题】螺旋箍筋柱核心截面的直径dcor 是 ( )。
A.
按螺旋箍筋或焊接环形箍筋内表面确定；
B.
按螺旋箍筋或焊接环形箍筋外表面确定
C.
按螺旋箍筋或焊接环形箍筋直径的中心表面确定；
D.
按纵向受力钢筋的中心表面确定。
【单选题】I ______ in No.46 Junior High School for four years. Now I have been a student of Tieren Senior High School for three months.
A.
have studied
B.
had studied
C.
was studying
D.
studied
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