甲乙双方签订了一份货物买卖合同，并在合同中约定了仲裁条款。后来该合同损害社会公共利益

根据增值税法律制度的规定，下列各项中，应缴纳增值税的是()。

A.银行销售金银

B.邮政部门销售集邮商品

C.房地产公司销售商品房

D.电力公司向发电企业收取的过网费

根据句子的语境，填写适当的连接词。

1. He said_________he had finished his homework in time.

2. I really don't know________she is.

3. I don't know________he didn't attend the meeting that day.

4. Tom asked me__________I had received his email.

5. He wondered_________he could get it or not.

6. She wants to know________many books he has sent to to you.

7. Do you remember_________I told you last time?

8. Do you know_________bag it is?

9. I wonder_________is your favorite in these books.

10. He asked me_________these fruits cost.

简述现代教育的特征？

2009年12月19日，中国国家 * * 温 * * 在世界气候大会上宣布，到2020年中国单位国内生产总值二氧化碳排放比2005年下降40%—45%，协同世界各经济体共同应对温室效应对地球的挑战。造成温室效应的原因是人类向空气大量排放了（     ）

A．CO

B．CO₂

C．SO₂

D．NO

设备保温层施工技术要求包括（）。

A.保温层厚度大于或等于80mm，应分为两层或多层逐层施工

B.用散装材料时，保温层应包扎镀锌钢丝网

C.用毡席材料时，毡席与设备表面紧贴，缝隙用高等级材料填实

D.同层合缝，上下层错缝