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(2001•内江)函数中,自变量x的取值范围是A.x≠-1B.x≠1C.x≠2D.x≠1且...
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(2001•内江)函数
中,自变量x的取值范围是( )
A.x≠-1
B.x≠1
C.x≠2
D.x≠1且x≠2
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