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设a,b为两条直线,α,β为两个平面,下列四个命题中,正确的命题是( ) A.若...
设a,b为两条直线,α,β为两个平面,下列四个命题中,正确的命题是( )
A.若a,b与α所成的角相等,则α∥b
B.若a∥α,b∥β,α∥β,则a∥b
C.若a⊂α,b⊂β,α∥b,则α∥β
D.若a⊥α,b⊥β,α⊥β,是a⊥b
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