灭火时,消防员都应站在().A.上风操作 B.下风操作 C.顶风操作 发布时间:2017-12-01 19:04 │ 来源:www.tikuol.com 题型:单项选择题 问题: 灭火时,消防员都应站在().A.上风操作B.下风操作C.顶风操作
题型:单项选择题 Recently a survey _______ prices of the same goods in two different shopping malls has caused heated debate among citizens. [ ]A. compared B. comparing C. compares D. being compared 查看答案