矿井局部通风方式有()三种。A、压入式 B、抽出式 C、混合式 D、并列式 发布时间:2017-11-29 20:45 │ 来源:www.tikuol.com 题型:多项选择题 问题: 矿井局部通风方式有()三种。A、压入式B、抽出式C、混合式D、并列式
题型:多项选择题 When asked by the police, he said that he remembered ______ at the party, but not _______. [ ]A. to arrive, leaving B. to arrive, to leave C. arriving, leaving D. arriving, to leave 查看答案