推荐回答(3个)
不一定对。
选择题:1 C 02 D 3 D 4 D 5A
填充题:1). 太阳,水藻,小鱼,鲨鱼
2) . 太阳,草,奶牛,乳酪,鼠,猫
3) . 太阳,树,煤,发电厂,电视机
问题: 7. (a) 环保,不会污染环境。 (b)受地区影响
8. (a)电能 (b)环保,不会产生废气.
9. (a)化学能(b) 古代的动物残骸埋在地下经过许多年形成了石油.
10. 循环使用 不浪费电 提高热效率
11. 利用太阳能 循环系统
12.开窗通风
13.(a)热能转化为电能 (b) 热能
14. (a)是
(b)90, 325, 170, 石油
(c) 结果为小.因为能源消耗是逐渐增加的.
15. 对对错错 对对错对 错错错对 错错对对
选择题:1 C 02 D 3 D 4 D 5A
填充题:1). 太阳,水藻,小鱼,鲨鱼
2) . 太阳,草,奶牛,乳酪,鼠,猫
3) . 太阳,树,煤,发电厂,电视机
问题: 7. (a) 环保,不会污染环境。 (b)受地区影响
8. (a)电能 (b)环保,不会产生废气.
9. (a)化学能(b) 古代的动物残骸埋在地下经过许多年形成了石油.
10. 循环使用 不浪费电 提高热效率
11. 利用太阳能 循环系统
12.开窗通风
13.(a)热能转化为电能 (b) 热能
14. (a)是
(b)90, 325, 170, 石油
(c) 结果为小.因为能源消耗是逐渐增加的.
15. 对对错错 对对错对 错错错对 错错对对
这是第17页的答案
(a)化学能 (b)因为石油都是由植物在经过地壳运动而长期掩埋于地下而产生的又因为植物的生长来源于太阳能,大量的植物和动物死亡后,构成其身体的有机物质不断分解,形成石油、具有化学能。
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