问答题

【参考答案】

我们用得最多的能源形式是电能，而且用量与日俱增。但是电也需要生产，要生产电就需要大量燃料，如石油、煤、天然气，现在甚至用......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)
<上一题 目录 下一题>
热门 试题

问答题
例如：多年来人们一直在利用太阳光的热量来烧煮食物。太阳炉是用若干面曲面镜反射阳光并将其热量聚焦于炊具上制成的。
单项选择题
The last paragraph of the passage clearly indicates that .
A．MSR-1 may be brought into practical application in a few years.
B．as a necessary pioneer in medical science, MSR- 1 has still a long way to go .
C．the basic mechanical components of MSR- 1 are being tested for their final assemblage.
D．the commercial applications of MSR- 1 will be expected in a few years.
相关试题