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【单选题】
在静电场中,有关电场线的下列说法中,正确的是( )A.
初速度为零的点电荷，在电场中只受电场力作用，则它的运动轨迹可能与电场线重合
B.
电场线通过的地方有电场，电场线不通过的地方没有电场
C.
点电荷在电场中所受的电场力方向可能与电场线垂直
D.
电场线的分布可以用实验来模拟，表明在电场中确实存在电场线
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A.
let
B.
promise
C.
get
D.
make
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A.
the 1840's
B.
the 1840s'
C.
1840s
D.
1840s'
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