A.平行 | B.相交 | C.垂直 | D.不能确定 |
A.若m∥α,α∥β,则m∥β | B.若m⊥α,α⊥β,则m∥β |
C.若m∥α,α⊥β,则m⊥β | D.若m⊥α,α∥β,则m⊥β |
A.(1)(2)和(4) | B.(2)和(4) | C.(2)(3)和(4) | D.(3)和(4) |
A.若α⊥β,m⊥α,则m∥β | B.若m⊥α,n∥α,则m⊥n |
C.若m∥α,n∥α,则m∥n | D.若α⊥γ,β⊥γ,则α∥β |
A.m∥α,α∥β=>m∥β | B.m⊥α,α∥β=>m⊥β |
C.m∥α,α⊥β=>m⊥β | D.m⊥α,α⊥β=>m∥β |
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