用单体支柱蹬架子帮助移架或扶正支架时，对工作人员的安全要求是什么？

Dear Mr. Black，

I’m very thank to you for inviting me to stay with you in the come summer vacation. I have been dreamed of seeing you again so that I can get help from you in my English learning. And I’m afraid I cannot go to your place in this summer. I’ve promised my grandmother, she lives in the country, to spend this summer with her. She misses me too much that I find difficult to refuse her request. I’m busy preparing for my examinations in present. I planned to visit you in winter if it’s convenient to you.

Best wishes.

Yours truly,

Li Ying

一年四季都能够进行蔬菜育苗或生产的园艺设施是（）。

统计指标的设计原则.

常设机构一般不具有法人地位，因此不能被视为独立纳税实体。

如何查询纳税人申报的财务报表？