在家庭电路中,正在工作的用电器越多,则( )
A.总电阻越大,总功率越小
B.总电阻越大,总功率越大
C.总电阻越小,总功率越小
D.总电阻越小,总功率越大
答案:D
Read and choose. 根据句意,选择最合适的单词填空。
1. I don't like (draws, to draw, draw) pictures.
2. We're the (same, different). I don' t like it, (either, too).
3. Let's (playing, play) games, OK?
4. Great! I like games. (What's, What) your favourite game?
如何用简单的方法检测光缆?