乙炔管道可分为低压管道、中压管道、高压管道三种，中压管道的压力为( )。A．0.0

看漫画回答问题：

请你指出“小同学”交友时应注意哪些问题？

You’re finishing up your history homework when your cell phone rings. You’ve got 30 minutes to reach head-quarters, get your equipment packed and receive your task. There’s a lost hiker in the mountains near the edge of town. Your task: find the missing person; provide emergency medical treatment, if necessary; and be prepared to operate 48 hours on your own with only the supplies you carry.

Sounds like some kind of film’s plot? Not if you’re a member of the Arapahoe teen rescue patrol in the suburbs of Denver. About 25 teen guys and girls are active members of this search, rescue and emergency organization, and they know firsthand that you don’t have to be an adult to save lives.

These 9th-through-12th graders are the real deal when it comes to emergency services. In fact, they’re the only teen-commanded patrol in the nation. Sure they have adult advisers to turn to if necessary, but in the field it’s a teen patrol officer calling the shots — sometimes even giving direction to adults.

Members are trained in rock-high-angle，swift-water and avalanche rescue (雪崩施行营救), winter and alpine operation , wilderness life support and emergency care, among other skills. They also regularly ride along with the local fire and police departments, providing support such as security details and evidence searching.

When asked what qualities make a good patrol member, founder and president Stan Bush named good physical conditioning and an interest in helping people. “We put in lots and lots of hours helping people in trouble,” he says. “So if a person is not really interested in doing that kind of thing, he won’t last as a member.”

小题1:In the first paragraph, the author describes ______.

A．a plot in some kind of film

B．a teen patrol member’s life

C．an emergency rescue

D．a lost hiker in trouble小题2:Which of the following is NOT true about the Arapahoe teen rescue patrol?

A．They are trained to have many special skills.

B．They also work with local firemen and policemen.

C．They turn to adults for help sometimes.

D．They think they can save lives only when growing up.小题3:If you want to become a good rescue patrol member, you must ______.

A．be strong and interested in offering help

B．be a 9th-through-12th grader

C．finish your history homework first

D．spend many hours helping people first小题4:What would be the best title for the passage?

A．What qualities make a good patrol member?

B．The Arapahoe teen rescue patrol

C．How to become a rescue patrol member

D．Skills a rescue patrol member needs

要在HTML文件中嵌入Applet，在＜applet＞标记中必须定义的是

A．Applet字节码文件的URL

B．Applet显示区域的高度和宽度

C．Applet字节码的文件名

D．选项B和选项C

在Windows 2000中，左键双击驱动器图标的作用是（）。

A、查看磁盘的内容

B、备份文件

C、格式化磁盘

D、检查磁盘驱动器