a减去b的差大于a,
则 C.b＜0
若一个数a减去b的差大于a,则( ) A.b＞0 B.b=0 C.b＜0 D.b的符号由a来确定
若一个数a减去b的差大于a,则( ) A.b＞0 B.b=0 C.b＜0 D.b的符号由a来确定
数学人气：984 ℃时间：2020-01-24 14:32:34
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