T2000中可以供我们导出的电子文档格式有：（）A.txt B.htm C.exce

下述二尖瓣狭窄影像，哪项不对()

A．间质性肺水肿

B．肺门影增大

C．梨形心

D．双房影

E．主动脉结增大

以下程序的执行结果是_____。
#include＜iostream.h＞
#include＜iomanip.h＞
voidmain()

cout．fill(’*’)；
cout．width(10)；
cout＜＜setiosflags(ios：：left)＜＜"123.45"＜＜endl；
cout．width(8)；
cout＜＜"123.45"＜＜endl：
cout．width(4)；
cout＜＜"123.45"＜＜endl；

患儿男性，10岁，因“肉眼血尿2天”来诊。患儿2天前感冒后出现尿血，尿色鲜红，量多，无尿急尿痛，伴发热恶风，咽红咽痛，咳嗽，乳蛾肿大，二便可。追问病史，患儿有反复肉眼血尿病史3年，无家族血尿病史。查体：舌红苔薄黄，脉浮数，血压正常，听力无异常，颜面、双下肢无水肿，咽红，扁桃体Ⅰ度大，余无异常。入院后检查：肉眼血尿，镜检红细胞满视野，余未见异常；肝、肾功能未见异常。

为进一步明确西医诊断，应考虑做的检查有（）

A.肾脏穿刺活检

B.尿红细胞形态

C.尿三杯

D.膀胱镜

E.尿钙检测

F.尿细菌培养+药物敏感试验

电除尘内部槽形板的作用是什么？

Drug use is rising dramatically among the nation’ s youth after a decade of decline. From 1993 to 1994, marijuana use among young people (1) from 12 to 17 jumped 50 percent. One in five high school seniors (2) marijuana daily. Monitoring the Future, which (3) student drug use annually, reports that negative attitudes about drugs have declined for the fourth year in a row. (4) young people see great risk in using drugs. Mood-altering pharmaceutical drugs are (5) new popularity among young people. Ritalin, (6) as a diet pill in the 1970s and now used to (7) hyperactive children, has become a (8) drug on college campuses. A central nervous system (9) , Ritalin can cause strokes, hypertension, and seizures. Rohypnol, produced in Europe as a (10) tranquilizer, lowers inhibitions and suppresses short-term memory, which has led to some women being raped by men they are going out with. (11) taken with alcohol, its effects are greatly (12) . Rock singer Kurt Cobain collapsed from an (13) of Rohypnol and champagne a month before he committed (14) in 1994. In Florida and Texas, Rohypnol has become widely abused among teens, who see the drug as a less expensive (15) for marijuana and LSD. Alcohol and tobacco use is increasing among teenagers, (16) younger adolescents. Each year, more than one million teens become regular smokers, (17) they cannot legally purchase tobacco. By 12th grade, one in three students smokes. In 1995, one in five 14-year-olds reported smoking regularly, a 33 percent jump (18) 1991. Drinking among 14-year-olds climbed 50 percent from 1992 to 1994,and all teens reported substantial increases in (19) drinking. In 1995, one in five 10th graders reported having been drunk in the past 30 days. Two-thirds of high school seniors say they know a (20) with a drinking problem.

4（）

A.More

B.Many

C.Fewer

D.Few