問題詳情
7. What is the function of self-closing doors in accommodation?
(A) To prevent dispersion of fire and smoke.
(B) To prevent invasion of water.
(C) To prevent passage of personnel.
(D) To prevent displacement of air.
參考答案
答案：A
難度：困難0.375
書單：沒有書單，新增
用户評論
【Jeffery’s Mar】評論
a self-closing device is required on a fire door