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【判断题】
道岔号数与辙叉角成正比关系,辙叉角越大,道岔号数越大;辙叉角越小,道岔号数越小。A.
正确
B.
错误
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【简答题】完形填空。 Catherine was a famous writer of children's stories. She lived in a fine old house in a small town near London. Often she worked at home, in her quiet l long before her books became popular,...
【单选题】如果活性污泥被接种到与原来生长条件不同的废水中(营养类型发生变化,污泥培养驯化阶段),或污水处理厂因故中断运行后再运行,则可能出现 。
A.
延迟期
B.
对数期
C.
静止期
D.
衰老期
【简答题】Miss Zhao is one of the most popular teachers in the school．Yesterday she came into the with a big smile on her face．She said to her that she was to see they did well in the sports meeting．But was not...
【简答题】减震器经验检测法又有______、按压检查、温度检查、_____、伸张力与下压力检查等.
【简答题】手绘一个简单的给水系统(组成部分尽量少),以照片附件上传。
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【单选题】如果活性污泥被接种到与原来生长条件不同的废水中(营养类型发生变化,污泥培养驯化阶段),或污水处理厂因故中断运行后再运行,则可能出现 。
A.
延迟期
B.
对数期
C.
静止期
D.
衰老期
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