问题
多项选择题
影响耐火极限的因素（）
A、构件的截面尺寸
B、构建的燃烧性
C、构件的保护层
D、构建的长度
答案
参考答案：A, B, C
搜题请搜索小程序“爱下问搜题”
影响耐火极限的因素（）
A、构件的截面尺寸
B、构建的燃烧性
C、构件的保护层
D、构建的长度
参考答案：A, B, C
| 从方框内选出恰当的句子完成下面对话，并将其字母标号填入相应题号前的括号内。 | |
Li Fei：Hello, Mr Wang. How are you? Mr Mang： 1 Li Fei：Mr Wang, this is my mother. 2 Mrs Li：Nice to meet you, Mr Wang. Mr Wang： 3 Li Fei was not at school yesterday. What's wrong with him? Mrs Li：He's got a cold. Mr Wang：Oh, I'm sorry to hear that. Are you better today, Li Fei? Li Fei：Yes, I'm much better. Mr Wang：Can you go to school tomorrow? Li Fei： 4 Mr Wang：OK, have a good rest . See you tomorrow. Li Fei： 5 |