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经过点P(x0, y0)且与直线Ax+By+C=0垂直的直线方程是
(A)B(x–x0)–A(y–y0)=0 (B)B(x–x0)–A(y–y0)+C=0
(C)B(x+x0)–A(y+y0)=0 (D)B(x+x0)–A(y+y0)+C=0