第18题: [多项选择]根据《公路隧道消防技术规程》,防火墙的设置应符合下列规定() A. 防火墙的建筑耐火极限不应低于3.00h B. 防火墙应设置在承重结构体上,防火墙上不应开设门窗、洞口,必须设置时,应设置能自行关闭的甲级防火门、窗 C. 水、电等管道、支架穿越防火墙时,应采用不燃烧材料将其周围的空隙填塞密实 D. 通风、排烟管道穿越防火墙时,应在防火墙的两侧设置防火阀、排烟防火阀 参考答案:A, B, C, D
How does the woman feel about her books A. They are too heavy and she can’t carry them. B. They are too many and she can’t read them all. C. They are too difficult and complex. D. She feels too tired to read. 参考答案:B 答案解析:[听力原文] W:I don’t think I can handle all of these books for this course. M:I found that you don