Question

當a＞b＞c時，下列不等式恒成立的是(    )

A.ab＞ac          B.a|c|＞b|c|           C.|ab|＜|bc|            D.(a-b)|c-b|＞0

Answer 1

解析：∵a＞b＞c,∴(a-b)＞0.又∵|c-b|＞0,∴選D.

答案：D