试题与答案

某同学要利用一把卷尺和一块 * * 面镜测出水平地面上的一棵大树的高度H。 (1)请画

题型:应用设计题

题目:

某同学要利用一把卷尺和一块 * * 面镜测出水平地面上的一棵大树的高度H。

(1)请画图表示他的测量方法,并简述测量步骤;

(2)用字母表示出所测得的物理量,并用测得的物理量符号写出树高的数学表达式。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0517/9a6c8d9ede1a6b22ee0ca8f4e1219d11.html

下面是错误答案,用来干扰机器的。

参考答案:B解析:高渗性缺水多见于严重烧伤患者,表现为口渴、乏力,唇舌干燥,烦躁不安,谵妄昏迷。此时补液应用5%葡萄糖或0.45%氯化钠。故选B。

试题推荐
题型:阅读理解

People Born in Autumn Live Longer

People born in the autumn live longer than those born in the spring and are less likely to fall chronically ill when they are older, according to an Austrian scientist.

Using census(人口普查)data for more than one million people in Austria, Denmark and Australia, scientists at the Max Planck Institute in the northern German town of Rostock found the month of birth was related to life expectancy(预期寿命)over the age of 50. Seasonal differences in what mothers ate during pregnancy, and infections occurring at different times of the year could both have an impact on the health of a new-born baby and could influence its life expectancy in older age. “A mother giving birth in spring spends the last phase of her pregnancy in winter, when she will eat less vitamins than in summer,” said Gabriele Doblhammer, one of a team of scientists who carried out the research. “When she stops breast-feeding and starts giving her baby normal food, it’s in the hot weeks of summer when babies are prone (易于)to infections of the digestive system.” In Austria, adults born in autumn (October-December) lived about seven months longer than those born in spring (April-June), and in Denmark adults with birthdays in autumn outlived those born in spring by about four months. In the southern hemisphere, the picture was similar. Adults born in the Australian autumn—the European spring—lived about four months longer than those born in the Australian spring. The study focused on people born at the beginning of the 20th century, using death certificates and census data. Although nutrition at all times of the year has improved since then, the seasonal pattern persists, Doblhammer said.

But on the other hand, according to a study of more 40,000 people, those born in spring and summer report themselves luckier than those born in autumn or winter. Professor Richard Wise-man who led the research explained that the temperature at the time of birth might influence the development of the brain and seasonal factors make a difference as well.

小题1:The underlined word “outlived” in the text probably means ________.

A.lived out of

B.depended on

C.had a shorter life than

D.lived longer than小题2:The census data of the following countries is used for research EXCEPT _______.

A.Germany.

B.Denmark.

C.Australia.

D.Austria.小题3:What’s the main idea of this text?

A.Nutrition at all times of the year has improved since the beginning of the 20th century.

B.In Austria, adults born in autumn (October—December) lived about seven months longer than those born in spring (April—June).

C.People born in autumn live longer than those born in spring and are less likely to fall ill when they are older.

D.Babies are prone to infections of the digestive system.小题4:Which of the following is NOT true according to the text?

A.Infections occurring at different times of the year influence the health of a new-born baby.

B.The study focused on people born in the late 20th century.

C.A mother giving birth in spring eats less vitamins during the last phase of her pregnancy in winter.

D.What mothers ate during pregnancy could have an impact on the babies’ life expectancy in older age.小题5:The right sentence of the following is ________.

A.The month of birth was not related to life expectancy over the age of 50.

B.A mother giving birth in spring spends the last phase of her pregnancy in winter, eating more vitamins than in summer.

C.Stopping breast-feeding and starting giving babies normal food must make babies prone to get infected with the digestive system in the hot weeks of summer.

D.Adults born in the Australian autumn―the European spring―lived about four months longer than those born in the Australian spring.

查看答案
题型:单项选择题 共用题干题

患儿男,9个月,体态较胖,发热、咳嗽4天,加重伴气促2天,精神不振,食欲减退。查体:体温37.9℃,呼吸46次/分,咽部充血,双肺可闻及哮鸣音,心率140次/分,肝脏肋下1.0cm,血常规WBC8.2×10/L,L0.72,CRP正常,胸片示两肺可见小点片状阴影,伴明显肺气肿。

临床诊断考虑为()。

A.腺病毒肺炎

B.婴幼儿哮喘

C.呼吸道合胞病毒肺炎

D.支原体肺炎

E.金黄色葡萄球菌肺炎

F.流感嗜血杆菌肺炎

查看答案
微信公众账号搜索答案