多选题:发生无焰燃烧必须具备的条件是( )。 题目分类:消防安全技术实务 题目类型:多选题 查看权限:VIP 题目内容: 发生无焰燃烧必须具备的条件是( )。 A.可燃物 B.氧化剂 C.温度 D.链式反应自由基 E.燃点 参考答案: 答案解析:
已知线段AB被点C(2,0,2)和D(5,-2,0)三等分,则端点A和B的坐标为( ). 已知线段AB被点C(2,0,2)和D(5,-2,0)三等分,则端点A和B的坐标为( ). A.A(-1,2,4),B(8,-4,-2) B.A(1,2,4), 分类:消防安全技术实务 题型:多选题 查看答案
What does the woman mean? What does the woman mean?A.They're ready for the snow. B.Once it starts, it'll s 分类:消防安全技术实务 题型:多选题 查看答案
sometimes he would make himself__________in the kitchen by c sometimes he would make himself__________in the kitchen by cleaning and tidying. 分类:消防安全技术实务 题型:多选题 查看答案