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【单选题】
参与踝关节构成的骨有A.
腓骨 、胫骨、距骨
B.
腓骨 、胫骨、跟骨
C.
胫骨、距骨
D.
胫骨、跟骨
E.
胫骨、距骨、跟骨
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举一反三
【单选题】关于磁场和磁感线,下列说法正确的是( )
A.
磁铁是磁场的唯一来源
B.
磁感线是磁体的北极出发而到南极终止
C.
两磁感线空隙处不存在磁场
D.
自由转动的小磁针放在通电螺线管内部,其N极指向通电螺线管磁场北极
【单选题】It's clear that the mainstream media have lost interest in classical music. For example, the NBC network used to have its own classical orchestra conducted by Arturo Toscanini, but no such orchestra e...
A.
whether popular taste has turned away from classical music
B.
whether newspapers are employing fewer writers on classical music
C.
whether the mainstream media have lost interest in classical music
【多选题】关于磁感应线和磁场，下列说法正确的是
A.
磁感应线是环绕电流的闭合曲线，无头无尾
B.
任意两条磁感应线在空间不能相交
C.
磁感应线的环绕方向与电流方向之间构成右手螺旋
D.
磁场是无源场，是涡旋场
【单选题】关于电场线和磁场线,下列说法正确的是( )
A.
电场线和磁场线都是闭合的曲线
B.
磁场线是从磁体的 N 极发出，终止于 S 极
C.
电场线和磁场线都不能相交
D.
电场线和磁场线都是现实中存在的
【单选题】For further detail, please ______ the last page of the newspaper. A. prefer to B. stick to C. refer to D. devote to
A.
prefer to
B.
stick to
C.
refer to
D.
devote to
【单选题】关于磁感线和电场线,下列说法中正确的是( )
A.
磁感线是闭合曲线，而电场线不是闭合曲线
B.
磁感线和电场线都是一些互相平行的曲线
C.
磁感线起始于 N 极，终止于 S 极；电场线起始于正电荷，终止于负电荷
D.
磁感线和电场线都只能分别表示磁场和电场的方向
【单选题】What inspired Robert Owen to devote efforts into creating an safer workplace?
A.
possible profit from factories
B.
articles in the newspaper
C.
deplorable factory conditions
D.
greedy factory owners
【单选题】What inspired Robert Owen to devote efforts into creating an idealistic workplace?
A.
possible profit from factories
B.
deplorable factory conditions
C.
greedy factory owners
D.
articles in the newspaper
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