下列关于供电合同中供电人义务的论述,错误的是( )。
A.按照国家规定的标准和合同约定安全供电
B.指导用电人
C.因自然原因断电时,应及时抢修
D.指导用电人正确用电
参考答案:B
Think and write. (根据主语人称,用be动词的正确形式填空)
1. — you a boy?
— No, I not.
2. The girl _____ Jack's sister.
3. The dog _____ tall and fat.
4. The man with big eyes____ a teacher.
5. ____ your brother in the classroom?
6. — Where _____ your mother?
— She at home.
7. How _____ your father?
8. Mike and Liu Tao _____ at school.
9. Whose dress _____ this?
10. Whose socks _____ they?
炉缸的初始煤气成份为N2、CH4、CO。