某品牌电脑单价5000元,需求量为100单位,现商家降价促销,价格下降10%,需求量 发布时间:2017-11-07 03:42 │ 来源:www.tikuol.com 题型:单项选择题 问题: 某品牌电脑单价5000元,需求量为100单位,现商家降价促销,价格下降10%,需求量增加了20%,则该品牌电脑的需求价格弹性系数的绝对值为()A.1 B.2 C.3 D.4
题型:单项选择题 在达成铁路复线工程中,某路段需要铺轨.先由甲工程队独做2天后,再由乙工程队独做3天刚好完成这项任务.已知乙工程队单独完成这项任务比甲工程队单独完成这项任务多用2天,求甲、乙工程队单独完成这项任务各需要多少天? 查看答案
题型:单项选择题 ______ in March, that so many people had on their light wears.A.So hot became the weatherB.So became the hot weatherC.The hot weather became soD.So hot did the weather become 查看答案