(三) 某新厂建成后欲生产甲、乙、丙三种产品，经调查，甲产品现

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问题多项选择题

(三)
某新厂建成后欲生产甲、乙、丙三种产品，经调查，甲产品现已有推荐性行业标准，乙产品已有推荐性国家标准，丙产品目前尚无相应的国家标准、行业标准和地方标准。

该厂制定丙产品的企业标准，则______。

A．由企业法人代表批准、发布

B．报当地工商管理部门备案

C．报当地标准化行政主管部门备案

D．无须办理备案

答案

参考答案：A,C

阅读理解

阅读短文，回答问题。

Eric gets up at 6: 30 from Monday to Friday. He has breakfast at seven. and then he goes to

school by bus. He gets there at 7:15. He doesn't like to be late. Classes begin at 8:00. He has lunch

at twelve at school. He goes home at 5:30 in the afternoon. On weekends, he gets up at about 8:00

and makes breakfast for his family. His parents like him very much.

1. How many days in a week does Eric get up at 6 : 30?

___________________________________________

2. What time does Eric get up on weekends?

___________________________________________

3. Docs lie go to school by bus?

___________________________________________

4. Who makes breakfast for his family on weekends?

___________________________________________

5. Do Eric's parents like him?

___________________________________________

单项选择题

设A为n阶矩阵，满足A²=A，k为正整数，则(A+E)^k等于

A．(2^k-1)A+E．

B．

C．(2^k+1)A+E．

D．