承重构件为不燃烧体的火力发电厂主厂房及运煤栈桥，其非承重外墙为难燃烧体时，其耐火极限
题型：单项选择题
问题：
承重构件为不燃烧体的火力发电厂主厂房及运煤栈桥，其非承重外墙为难燃烧体时，其耐火极限不应小于（）。
A、0.25h
B、0.5h
C、0.75h
D、1.0h
题型：单项选择题
| 先阅读短文，然后用下面方框中所给的单词或短语填空，使全文在逻辑上正确。（提示：选项中有一个是多余的。） | |
| |
| 1. Rose took us out to dinner at an _____restaurant, but the food was not good at all . 2. I need a new coa  t .This one doesn't _____the cold3. Working hard at Science can _____to a good job. 4. Wait before you buy that computer , Let's ____prices at another store . 5. Her shoes were really ____ They only cost seven dollars |
