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【多选题】
通电矩形线圈平面垂直于磁场的磁感线，则有( )If the electrified rectangular coil is perpendicular to the magnetic flux line of the uniform magnetic field, then( )A.
线圈所受的合力为零 The algebraic sum of the magnetic force on the coil is zero
B.
线圈所受以任一边为轴的力矩为零 The torque of the magnetic force on either side of the coil is zero
C.
线圈所受以任一对角线为轴的力矩不为零 The torque of the magnetic force on any diagonal as the axis is not zero
D.
线圈所受必定使其四边有扩展形变的效果 The magnetic force on the coil must make its four sides to expand outward
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【单选题】He is something ________ a doctor, but in spite of the medicine he gave me, my pain lingered ________.
A.
for, on
B.
about, in
C.
of, on
D.
of, to
【单选题】Clever and intelligent as he is, he can never solve the problem______.
A.
alone
B.
lonely
C.
lone
D.
alonely