倾角为a=300的光滑斜面上,置一通有电流I,长L,质量为m的导体棒,重力加速度

不属于甲肝病毒特点的是

A．属于小DNA病毒
B．主要经粪一口传播
C．传染源为患者
D．病后可获体液免疫
E．可用减毒活疫苗预防

阅读理解。

     The Internet can show you a lot of jobs all over the world. If you want to find a job on the

     Internet, use the words“Job search”to find the websites(网址)you need. Type in what you want and

where you want to work. In a few seconds, a list of jobs will appear on the screen. Or you can type in

the name of a company(公司)to learn about jobs there.Many websites list full-time,part-time and summer

jobs.

     Job search websites can help in other ways, too. They show how to write a good resume(简历)and

how to prepare for an interview. They also tell you what to say to an interviewer on the telephone. Some

websites give you some interview conversations(对话)to practise. One website even has a dictionary of

interview words. A good job website can be a big help in your job search.

    Good luck with your job-hunting.

1. What does the passage tell you to do first if you want to find a job on the Internet?

A. Type in“Job search”to find the websites.

B. Practise some interview conversations.C. Prepare for an interview.

D. Get a dictionary to learn some interview words.

2. From the passage, we know that_________.

A. it is easy to find the job you like on the Internet

B. some websites show you how to write a resume

C. if you type in the name of a company, you will get a job there

D. job search websites can show you all the jobs

3. What’s the passage mainly about?

A. The Internet lists a lot of companies all over the world.

B. There are many websites on the Internet.

C. How you can use the Internet to find a job.

D. There are different ways to look for jobs.

国家行政机关在行他公共管理职权过程中，对特定行政管理相对人作出的能够影响有关该行政管理相对人的权利、义务的行为指的是【】

A．公共管理行为

B．抽象行政行为

C．具体行政行为

D．行政确认

若视频的图象分辨率为800*600，32位色彩，如果以25帧/秒的速度播放则每秒钟不压缩的数据量大约是（）。

A、45.8MB

B、48MB

C、36.6MB

D、50.1MB

电路是由电源、负载、开关经导线连接而成的闭合回路。