题目内容

下列说法正确的是
                                                                                                                                                         [    ]
A.a,b,c是直线,且a∥b,b∥c,则a∥c
B.a,b,c是直线,且a⊥b,b⊥c,则a⊥c
C.a,b,c是直线,且a∥b,b⊥c,则a∥c
D.a,b,c是直线,且a∥b,b∥c,则a⊥c
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