单选题:以下系统中,用于当烟阻火和冷却分隔物的是( ) 题目分类:消防安全技术实务 题目类型:单选题 查看权限:VIP 题目内容: 以下系统中,用于当烟阻火和冷却分隔物的是( ) A.湿式系统 B.干式系统 C.雨淋系统 D.水幕系统 参考答案: 答案解析:
设有中央空调系统的多层办公综合楼,设有自动喷火灭水系统,其棚顶、墙面、地面装修材料燃烧性能等级最低应为( ) 设有中央空调系统的多层办公综合楼,设有自动喷火灭水系统,其棚顶、墙面、地面装修材料燃烧性能等级最低应为( )A.A级,B1级,B1级 B.A级,B2级,B2级 分类:消防安全技术实务 题型:单选题 查看答案
We may have known someone for ten years and still know very We may have known someone for ten years and still know very little about him bec 分类:消防安全技术实务 题型:单选题 查看答案
Which of the following is TRUE according to the passage?____ Which of the following is TRUE according to the passage?___________A.Exceptional 分类:消防安全技术实务 题型:单选题 查看答案
It is not easy to learn English well, but if you___________, It is not easy to learn English well, but if you___________, you will succeed in 分类:消防安全技术实务 题型:单选题 查看答案
During the reading lesson, the teacher asked students to rea During the reading lesson, the teacher asked students to read a few ___________ 分类:消防安全技术实务 题型:单选题 查看答案