不需要考核功率因数的是（）
A.居民生活用电
B.农业生产用电
C.100千伏安（千瓦）以下的用户
D.趸售用户
参考答案：A, C
句型转换。
1. Why don't you ask Tom for help?(改为同义句)
_____ _____ ask Tom for help?
2. Have you got any pen friends?(改为同义句)
_____ you _____ any pen friends?
3. Don't forget to speak English, _____ _____?(完成反意疑问句)
4. To remember new words is difficult.(改为同义句)
_____ difficult _____ remember new words.
5. I was born in Tianjin in 1991.(对画线部分提问)
_____ and _____ _____ you born?
肺胃热盛所致咽喉肿痛宜用（）
A．清音丸
B．清咽丸
C．利咽解毒颗粒
D．复方板蓝根片
E．玄麦甘桔颗粒
