气体灭火系统储存装置一般由()等部件组成。A、储存容器B、容器阀C、选择阀D、集流管 发布时间:2019-02-19 04:20 │ 来源:www.tikuol.com 题型:多项选择题 问题: 气体灭火系统储存装置一般由()等部件组成。A、储存容器B、容器阀C、选择阀D、集流管E、单向阀
题型:多项选择题 I had Helen's brother _____ the windows, but Helen had them _____ instead.A.to clean; cleanedB.cleaned; cleanedC.cleaning; cleanedD.clean; cleaned 查看答案