引起油脂自燃的内因是有较大的氧化表面(如浸油的纤维物质)有空气,具备蓄热的条件。
参考答案:错
任务型阅读。
Mary is my good friend. She is from Australia and she is ten years old now. She has a very cute and
clever dog and cat. The dog's name is Toby. He is four years old. He comes from Beijing. He likes to eat
bones (骨头) very much. He doesn't like to eat fish at all. But the cat called Mini likes eating fish very
much. They are friendly to each other and they often play together. Mary likes them very much. She is
glad to have these two pets (宠物).
1. Mare's dog is from _____.
2. Now Mary is at the age of _____.
3.The name of the cat is _____.
4. The dog and the cat are _____ to each other.
5. The cat likes to eat _____.
多台高压真空配电装置安装时,安装顺序可采用()
A、先安装中间,然后再安装两侧
B、先安装两侧,然后再安装中间
C、从一侧排列到另一侧
D、隔一台安装一台