()是从输电网接受电能分配到配电变电站以后,再向用户供电的网络。
参考答案:配电网
若a、b互为相反数,c、d互为倒数,m的绝对值为2,则2(a+b)-3cd+m=______.
句型转换。
1. The stamp is two yuan. (对画线提问)
__________________________________________
2. Turn left at the traffic lights. (否定句)
3. I have nine postcards. (对画线提问)
4. I live with my mother. (改为一般疑问句)
5. I live in China. (用he代替I 改写句子)