按容量不同，锅炉可分为（）.（）.（）和超大容量锅炉。_爱下问搜题

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问题填空题

按容量不同，锅炉可分为（）.（）.（）和超大容量锅炉。

答案

参考答案：小容量锅炉；中容量锅炉；大容量锅炉

选择题

Great changes ______ in the city, and a lot of factories ______.

A. have been taken place; have been set up
B. have taken place; have been set up
C. have taken place; have set up
D. were taken place; were set up

填空题

建立成功的MIS有两个先决条件：一是指定好系统的开发策略；二是企业管理【16】。