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【单选题】
11-6-3 如图所示,半径为 R 的半圆形线圈,通电流为 I ,处在磁感强度为 B 的磁场中,磁感 应线与线圈平面垂直,则半圆线圈所受的大小为?,方向为?A.
,水平向左
B.
，水平向右
C.
,水平向左
D.
，水平向右
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【单选题】_____ fairly recently____ solved, at least partially.
A.
Until...that is problem was
B.
It was until...that this problem was
C.
Not until...was this problem
D.
It was not until ...when this problem was
【单选题】Which statement least represents U.S. values?
A.
U.S. Americans value directness over indirectness.
B.
U.S. Americans value time management over leisure.
C.
U.S. Americans value history over planning for the future.
D.
U.S. Americans value equality over inequality.
【单选题】Which statement least represents U.S. values?
A.
U.S. Americans value equality over inequality.
B.
U.S. Americans value time management over leisure.
C.
U.S. Americans value directness over indirectness.
D.
U.S. Americans value history over planning for the future.
【简答题】Recently, some local governments have advocated that universities should teach at least one selective course in local dialect so as to protect local language as well as the distinctive culture. Then, ...
【简答题】Recently a large medicine factory set up by the U. S. Investors declared that it will stop giving 'kickbacks' to doctors as the factory has spent too much to promote sales over the years.
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