矿井必须装备2套同等能力的主要通风机，其中备用的1套必须能在（）min内启动。A、3

书面表达。

     北京仁爱国际英语学校八年级学生魏环境向福州的网友李志愿发了一封电子邮件，询问了一些情况。请根据来信帮他回一封电子邮件。

     注意：1. 词数：60词左右；

                 2. 邮件的开头和结尾已替你写好，不计入总词数。

Receiver：Li Zhiyuan@163. com

Subject：How to protect the clean water?

Dear Li Zhiyuan, I feel very excited about my visit to Fuzhou and meeting you for the first time! But I’m still not sure about the following questions:1. Are there any rivers or lakes in your city? 2. Is the water dirty or clean? Why? 3. Did you do anything useful to protect the clean water? Please let me know. 

                                                                                                                                         Your friend，  

                                                                                                                                         Wei Huanjing  

Dear Wei Huanjing，

       I am very excited to receive your e-mail.  I am interested in your questions. _________________________________________________________________________________________________________________________________________________________________________________     

Looking forward to meeting you soon.

                                                                                                                                               Yours, 

                                                                                                                                             Li Zhiyuan

SF6开关定量检漏方法有扣罩法、挂瓶法、（）、压降法。

补写名句或填写课文原句。（12分，①一⑥每题1 分，⑦⑧⑨题各2 分）

①身无彩凤双飞翼，                 。      

②  　             ，始于足下。

③     　 　      ，乌蒙磅礴走泥丸。   

④人生自古谁无死，　　　　      　　　。

⑤不畏浮云遮望眼，             　     

⑥                    ，一览众山小。

⑦当他回忆往事的时候，_________   __  ________   ；_________________________ ；

⑧今民生长于齐不盗，　　　　  　　　 ，　　　　         　　　　　　　？

⑨著名诗人白居易在《钱塘湖春行》中的“ ____________________，                ”，表现出诗人对莺歌燕舞早春美景的喜悦之情。

国际企业文化的层次包括（）

A.心理层次

B.制度层次

C.行为层次

D.民族层次

E.社会层次

企业“3P”形象是指：一流的员工、一流的产品、一流的企业。