在方法比较试验中,统计求得的回归系数b代表的是()A.偶然误差 B.系统误差 C.恒

题型:单项选择题

问题:

在方法比较试验中,统计求得的回归系数b代表的是()

A.偶然误差

B.系统误差

C.恒定误差

D.比例误差

E.两法相关性

考点:临床医学检验一、临床生物化学检验技术与管理一、临床生物化学检验技术与管理题库
题型:单项选择题

清雍正年间,军机处设在皇宫内,与皇帝日常生活办公地毗邻。如此安排的主要目的是

①军机处官员能更好地照顾皇帝的生活起居  ②在军机处办理要务易于保密

③军机处官员便于皇帝宣召  ④受外界干扰少,办事效率较高

A.①③④

B.②③④

C.①②④

D.①②③

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患者,男性在手腕部的剧烈运动后感觉踝关节疼痛,1个月后又发生阵发性左下腹绞痛而就医。实验室检查:血常规正常,肝功能和血清淀粉酶正常,血清尿素和肌酐正常。泌尿系统影像学检查发现有肾结石。

关于该患者踝关节疼痛,以下哪项不对().

A.其踝关节疼痛与运动无关

B.急性关节炎常是痛风的首发症状

C.可能由尿酸钠结晶沉积于关节腔内引起

D.最易受累部位是跖关节

E.踝关节、跟关节等其次受累

题型:单项选择题

名著阅读(读下面两段文字,回答题后的问题。)

  【甲】杨志寻思道:“却是恁地好?只有祖上留下这口宝刀,从来跟着洒家,如今事急无措,只得拿去街上货卖得千百贯钱钞,好做盘缠,投往他处安身。”当日将了宝刀,插了草标儿,上市去卖,走到马行街内,立了两个时辰,并无一个人问。

  【乙】“……你以为,就因为我贫穷,低微、不美、矮小,我就没有灵魂,也没有心吗?——你错了!我跟你一样有灵魂——也同样有一颗心!要是上帝曾给予我一点美貌、大量财富的话,我也会让你难以离开我,就像我现在难以离开你一样。我现在不是用习俗、常规、甚至也不是用血肉之躯跟你说话,就好象我们都已离开人世,两人一同站在上帝面前,彼此平等——就象我们本来就是的那样!”

⑴【甲】段文字选 自名著《           》,所属情节是 ___________________                     

⑵【乙】段文字中的“我”是___________(人名),原著中“我”的主要性格特点是 _____________________________                                                                             

题型:单项选择题

1826, a Frenchman named Niepce needed pictures for his business .But he was not a good artist.So he invented a very simple camera (照相机).He put it in a window of his house and took a picture of his garden .That was the first photo.

The next important date in the history of photography was 1837. That year, Daguerre, another Frenchman, took a picture of his studio. He used a new kind of camera and a different processs. In his pictures, you could see everything very clearly, even the smallest details. This kind of photograph was called a daguerreotype.

Soon, other people began to use Daguerre's process. Travellers brought back daguerreotypes from all around the world. People photographed famous buildings, cities and mountains.

In about 1840, the process was improved. Now photographers could take pictures of people and moving things. The process was not simple. The photographers had to carry lots of film and processing equipment. But this did not stop the photographers, especially in the United States, where from the 1840s daguerreotype artists were popular in most cities.

Mathew Brady was a well-known American photographer. He took many pictures of famous people. The pictures were unusual because they were very life-like and full of personality.

Brady was also the first person to take pictures of war. His 1862 Civil War pictures showed dead soldiers and ruined cities. They made the war seem more real and more terrible

In the 1880s, new inventions began to change photography. Photographers could buy film readymade in rolls. So they did not have to make the film immediately. They could bring it back to their studios and develop it later, meaning that they did not have to carry lots of equipment. And finally, the invention of the small handheld camera made photography less expensive.

With the small camera, anyone could be a photographer. People began to use cameras just for fun. They took pictures of their families, friends and favourite places. They called these pictures "snapshots".

Photographs became very popular in newspapers in the 1890s. Soon magazines and books also used documentary photographs. These pictures showed true events and people. They were much more real than drawings.

Photography had turned into a form of art by the beginning of the 20th century. Some photographs were not just copies of the real world. They showed ideas and feelings, like other art forms.

小题1:The passage is mainly about______________.

A.the invention of cameras

B.a kind of new art -- photography

C.the development of photography

D.the different uses of cameras in history小题2: The first pictures of a war were taken by ____________.

A.a French photographer in the 1840s

B.an American photographer in the 1860s

C.a German reporter in the 1880s

D.a French artist in the 1890s小题3: Which of the following statements is TRUE about the photography in the 19th century?

A.It was mainly based on the invention of the first photograph.

B.Photographers were popular in the United States because they carried lots of equipment.

C.Photographers used to make film themselves and developed it immediately after taking a photo.

D.Small handheld cameras made it possible for anyone to become a gifted photographer.小题4:In which order are the following statements mentioned in the passage?

a. Photographs became popular in newspapers.

b. Photographers carried processing equipment when taking pictures.

c. The invention of small handheld cameras made photography easier.

d. Daguerre invented a kind of photograph called daguerreotype.

e. Brady took pictures of famous people.

A.e,a, d, b, c

B.d, b, e, c, a

C.b, e, c, a, d

D.d, c, e, a , b小题5: Photography can also be an art form because artists can ____________.

A.take anything they like

B.keep a record of real life

C.take photos of the famous

D.show ideas and feelings in pictures

题型:单项选择题

随着钢材厚度的增加,下列说法正确的是()。

A.钢材的抗拉、抗压、抗弯、抗剪强度均下降

B.钢材抗拉、抗压、抗弯、抗剪强度均有所提高

C.钢材的抗拉、抗压、抗弯强度提高,而抗剪强度降低

D.视钢号而定

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