在“打印”对话框的“打印内容”下拉列表中，包括以下（）选项。A、幻灯片 B、讲义 C

阅读短文，根据短文内容回答问题

       Every year, wildfires(野火) destroy much forest land. homes are broken down, and thousands of

people

die. smokejumpers are stop helping to stop this.

       Smokejumpers are a special kind of firefight. they jump from places into areas that difficult to reach

by car or on foot. they race to put out fires as fast as they can.

       At a fire site, Smokejumpers first examine the land and decide how to fight the fire. their main goal is

to stop fire from spreading. using basic tools such as shovels and axes, smokejumpers clear land of

burnable material like plants and other dry material.  they carry water with them too,  but not much.

       Although most smokejumpers are men, more women are joining. Most important are your weight

and height. Smokejumpers in the U.S. for example ,must be 54 to 91 kilograms, so they don't get hurt

when they land, or get blown by strong winds.

       Smokejumpers must be able to live in the wilderness. in Russia ,many smokejumpers know how to

find food in the forest and even make simple furniture from trees.

       Theyir work is dangerous, the hours are long. But for these firefighters, smokejumpers isn't just a job.

They love being able to jump out of planes,  fight fires,  and live in the forest.  As 28-year-old Russian

smokejumpers Alexi Tishin says,"This is the best job for the strong and brave."

1. What are Smokejumpers?

2. Where do the jump from?

3. What's their main goal?

4. Why should they have proper weight?

5. What's needed to be a smokejumpers?

麻醉药血中浓度与脑组织浓度达平衡需要5～6分钟。()

几种直探头在探测同一材料时，具有最大干涉区的是（）。

A、1Pφ14

B、2.5pφ14

C、1Pφ20

D、2.5Pφ30

举例说明什么叫同音通假？

胰岛细胞瘤时血中出现（）

A.C肽水平降低

B.C肽水平升高

C.C肽水平正常

D.胰岛素原水平降低

E.糖化血红蛋白水平降低