施工现场可燃材料堆场及其加工场、固定动火作业场与在建工程的防火间距不应小于（）。
A.5m
B.6m
C.8m
D.10m
参考答案：D
同义句转换, 每空一词。
1. She was first in the competition.
She ______ _______ _______ in the competition.
2. We couldn’t go there because the weather was bad.
We couldn’t go there _______ _______ the bad weather.
3. Sam started to learn how to swim at the age of three.
Sam started to learn how to swim ______________ _______ three.
4. Mike is so young that he can’t go to school.
Mike is _______ _______ _______ go to school.
5. People called him "a talented boy".
He _______ ________ "a talented boy".
纳西姆机组送气原理？
