过剩空气系数对转化炉操作有何影响？
参考答案：
过剩空气系数表示了入炉的实际空气量。其值大，说明入炉的实际空气量多，可以使燃料燃烧完全，但过大，会使烟气携带的热量增多，降低转化炉的热效率。过剩空气系数过小，燃料燃烧的需氧不足，导致燃烧不完全，产生一氧化碳，反而引起燃料耗量增加，所以控制适当的过剩空气系数值，对转化炉的燃料消耗和热效率至关重要，一般控制在1.05-1.1的范围。
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| I first saw the baby panda when she was only 10 days old. She looked like a white mouse. We 1 her Xi Wang. It means "hope". When Xi Wang was born, she was just 100 grams(克). Xi Wang drank her mother's milk for as 2 as 14 hours a day. When she was six months old, she started to eat bamboo shoots(嫩芽). Eight months 3 , she was not a small baby any more. She grew into a 4 young panda and weighed 35 kilos. When Xi Wang was 20 months old, she had to look after herself because her mother had another baby. Xi Wang has to live by itself. 5 , it is very difficult for pandas to live in the wild. Here are some problems that pandas like Xi Wang may have in the future. If hunters (猎人) catch a panda, they will 6 it for its fur(皮毛). If farmers 7 trees and forests, pandas will have no place _8 . When Mothers leave baby pandas 9 , people will often take them away. People think that the baby pandas need help. If pandas are in danger, we should try our best to protect them. If we do 10 , soon there will be no pandas in the world. | ||||
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