问题 多项选择题

换热器、阀门和管道保温技术()

A.可用于热源部件的保温

B.减少热源设备和输配管网的热损失

C.提高能源效率

D.降低能源效率

E.可用于输配管网等处的保温

答案

参考答案:A, B, C, E

填空题
材料分析题

 

(1)漫画告诉我们节约用水时要注意什么?请举一个节约用水的生活实例。

                                                                                                                                                              

                                                                                                                                                              

(2)利用课本知识分析这样做的原因是什么?

                                                                                                                                                              

                                                                                                                                                             

(3)结合漫画,请你尝试画一张宣传画,并写出宣传画的寓意。

宣传画:

寓意: