（英文版的物理）Water heater that make use of the Sun often have sol

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/06 06:47:26

（英文版的物理）Water heater that make use of the Sun often have solar panels mounted on the roof.
(a)Why are copper pipes being used?
(b)Why are the copper pipes and the metal sheet black in colour?
(c)Why is there an insulation sheet under the metal sheet?

太阳能热水器通常把太阳能板安装在顶部.
1）为什么要用铜管?
因为铜管更易于导热：
For its good thermal conductivity
2）为什么铜管的和金属片是黑色的?
黑色有利于吸收热量.
Black pipes are easy to absorb heat.
3）为什么金属板下面要有隔热板?
防止热量从底部散去.
To reduce the energy loss from bottom
这题好怪啊,楼主是不是没把所有东西打出来啊?

we use the heater to make the room warm 的同义句 --Mike,have you ever heard of the latest water heater using Make full use of the sea water.Carry salt water all we'd have to do to make use of sea water in the world is WE know that the ————【authority】have lots of problems to sol To sum up.man should make good use of water,or we will have the sun has much (e ).how to make full use of it is very imp make the fullest use of Write down thenames of the materials we often use to make th 30% of the water on the earth ( ) use by people.填use 的适当形式 now that you have got a chance,you should make use of it 英语中 that I will make full use of the time (that) there is ls