乳腺癌切线野定位时,患者背后垫板角度通常选()A.20°~25° B.25°~30°

题型:单项选择题

问题:

乳腺癌切线野定位时,患者背后垫板角度通常选()

A.20°~25°

B.25°~30°

C.30°~40°

D.5°~20°

E.≥40°

考点:肿瘤学(医学高级)胸部肿瘤胸部肿瘤题库
题型:单项选择题

阅读理解。

     Teachers at American colleges and universities have many different teaching methods. Some teachers

give homework and check homework every day, and students in their classes have to take many exams.

Some teachers give only writing tasks. Some teachers always follow a course outline and usually use the

textbook. Others send students to the library for tasks.

     The atmosphere in some classrooms is very formal. Students call their teachers Professor (教授) Smith,

Mrs. Jones and so on. Some teachers wear business clothes and give talks. Other classrooms have an informal ( 非正式的 ) atmosphere. Students and teachers discuss their ideas. Teachers dress informally, and students

call them by their first names. American teachers are different in their teaching styles.

     At most American colleges and universities, libraries and learning centers can be used by students at any

time. They can often use tape recorders, video machines and computers. They can buy books, notebooks and

other things at campus stores. There are also services (服务) to students. They can get advice on their

problems from their teachers. Colleges and universities usually offer facilities (设施) to students. Some schools

have swimming pools and tennis courts. Most have fast food restaurants.

1. At American colleges and universities, some teachers _________.

A. never give their students any homework

B. give classes in the library

C. give only writing tasks

D. only give their students writing exams

2. In an informal class, _________.

A. students call their teachers Professor Smith, Mrs. Jones and so on

B. students discuss their ideas with their teachers

C. students have to take many exams

D. teachers dress formally

3. The underlined word "campus" means _________ in Chinese.

A. 校园

B. 工厂

C. 社区

D. 广场

4. According to the passage, most schools in America have _________.

A. swimming pools

B. fast food restaurants

C. tennis courts

D. basketball courts

5. Which of the following is not mentioned in this passage?

A. Teaching methods.

B. Teaching styles.

C. College facilities.

D. University dinning rooms.

题型:单项选择题

下列说法中正确的是(  )

A.电流表和电压表都可直接接到电源的两极上

B.电流表可以直接接到电源的两极上,而电压表不行

C.电压表可直接接到电源的两极上,而电流表不行

D.电流表和电压表都不能直接接到电源的两极上

题型:单项选择题

急性期脑内血肿的CT表现,错误的是()。

A.发病时间在1周内

B.平扫为肾形或椭圆形均匀高密度影

C.血肿密度高达100HU以上

D.血肿周围有低密度水肿区

E.血肿大时占位效应明显

题型:单项选择题

在党的()上,第一次明确、完整地提出要建立社会主义市场经济,并将其作为我国经济体制改革的主要目标。

A.十一届三中全会

B.十二大

C.十三大

D.十四大

题型:单项选择题

锅炉汽包水位、蒸汽流量(或压力)和给水流量的三冲量控制实质是()。

A.串级控制

B.选择性控制

C.前馈控制

D.前馈-串级控制

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