问答题

简答：226.尾部烟道二次燃烧的原因有哪些

答案：尾部烟道二次燃烧是指在锅炉尾部烟道中，由于未完全燃烧的燃料颗粒（如煤粉、油滴等）在高温下继续燃烧的现象。这种现象可能导致...

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单项选择题

Which of the following is not used for the English name of Laozi’s book?

A、Laozi
B、Dao De Jing
C、Classic of the Way and Virtue
D、Daoism

There are _____(addition) tasks to finish.

答案： additional 完整句子：There are additional tasks to finish.