A.若,,则 |
B.若,,则 |
C.若,,,则 |
D.若,,,则 |
A.α⊥β,且m⊂α | B.m∥n,且n⊥β |
C.α⊥β,且m∥α | D.m⊥n,且n∥β |
A.若b⊂α,c∥α,则c∥b |
B.若b⊂α,b∥c,则c∥α |
C.若c⊂α,α⊥β,则c⊥β |
D.若c⊂α,c⊥β,则α⊥β |
A.若AC与BD共面,则AD与BC共面 |
B.若AC与BD是异面直线,则AD与BC是异面直线 |
C.若AB=AC,DB=DC,则AD=BC |
D.若AB=AC,DB=DC,则AD⊥BC |
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