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已知直线a和平面α,β,α∩β=l,a⊄α,a⊄β,且a在α,β内的射影分别为直...
已知直线a和平面α,β,α∩β=l,a⊄α,a⊄β,且a在α,β内的射影分别为直线b和c,则b和c的位置关系是( )
A.相交或平行
B.相交或异面
C.平行或异面
D.相交﹑平行或异面
考点分析:
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