At a bottling company,machine A fills a bottle with spring water and machine B accepts the bottle only if the number of
问题描述：
At a bottling company,machine A fills a bottle with spring water and machine B accepts the bottle only if the number of fluid ounces is between 11又7/8 and 12又1/ 8 .If machine B accepts a bottle containing n fluid ounces,which of the following describes all possible values of
(A) ︱n-12︱=18 (B) ︱n+12︱=18 (C) ︱n-12︱＜1 8 (D) ︱n+12︱﹤18 (E) ︱n-12︱﹥1 8
为什么?
答
答案应该是C
且选项中18应为1/8