女性,35岁。二尖瓣狭窄,当失代偿期发生时,最初的症状是() A.咯血 B.腹痛 C

题型:单项选择题 A1/A2型题

问题:

女性,35岁。二尖瓣狭窄,当失代偿期发生时,最初的症状是()

A.咯血

B.腹痛

C.晕厥

D.心绞痛

E.劳力性呼吸困难

考点:呼吸内科基础知识呼吸内科基础知识综合复习题呼吸内科基础知识综合复习题题库
题型:单项选择题 A1/A2型题

缺铁性贫血时增高的指标是()。

A.血清铁

B.血清铁蛋白

C.总铁结合力

D.转铁蛋白饱和度

E.骨髓细胞内、外铁

题型:单项选择题 A1/A2型题

如图所示,

(1)人用脚踢足球,________是施力物体。

(2)飞起后的球最后总是落到地面,是因为球受到了________力的作用,这个力的施力物体是______。

(3)脚踢球时,脚会感到疼痛,使脚疼痛的力的施力物体是_______。

题型:单项选择题 A1/A2型题

在不使用备胎的情况下,六胎二桥汽车进行循环换位时,应将左前轮轮胎换到()。

A、右后里轮

B、右后外轮

C、左后里轮

D、左后外轮

题型:单项选择题 A1/A2型题

When you are in another country, it is important to know the language, but it is equally important to know how to communicate nonverbally, before saying anything by making gestures. According to a pioneer in nonverbal communication, only 30 to 35 percent of our communication is verbal. When people don’t know the language, the most common way to communicate is through gestures. However, many gestures have different meanings, or no meaning at all in different parts of the world.
In the United States, for example, nodding your head up and down means "yes". In some parts of Greece and Turkey, however, this motion can mean "no". In Southeast Asia, nodding your head is a polite way of saying "I’ve heard you".
In ancient Rome, when the emperor wanted to spare someone’s life, he would put his thumb up. Today in the United States, when someone puts his/her thumb up, it means "Everything is all right". However, in Sardinia and Greece, the gesture is insulting and should not be used there.
In the United States, raising your clasped hands above your head means "I’m the champion" or "I’m the winner". It is the sign prizefighters make when they win a fight. When a leading Russian statesman made this gesture after a White House meeting, Americans misunderstood and thought he meant he was a winner. In Russia, however, it is a sign of friendship.
In the United States, holding your hand up with the thumb and index finger in a circle and the other three fingers spread out means " Everything is O.K. " and is frequently used by astronauts and politicians. In France and Belgium, it can mean "You’re worth nothing. "
There are other nonverbal signals that people should be aware of when they go to another country, such as the distance to maintain between speakers. Americans usually feel comfortable when speaking with someone if the distance between them is about eighteen inches to arm’s length. Anything closer makes them feel uncomfortable.
When talking to Americans, it is also important to make eye contact. If you look down when talking to an American, he/she may feel that you are embarrassed, afraid, or trying to hide something.
In addition to knowing how to communicate nonverbally in a country, it is important to know what you and he cannot discuss. In the United States, there are certain topics to avoid when you first meet someone, For example, don’t ask people their age, weight, religion, marital status, how much money they earn, or how much something costs. You can talk about work, the weather, traffic problems, sports, food, news of the day, where one lives, consumer subjects (computers, car repairs, and so forth), and travel or vacation plans.
These few examples illustrate that your actions can speak louder than your words. In a particular cultural contest, what you say and what you don’t say are equally important.

The main idea of the passage is that when you are in another country, ______.

A. it is unimportant to know the language
B. it is important to know what you can talk about to a foreigner
C. to know how to communicate nonverbally is as important as to know the language
D. to communicate the rough gestures is more important than to know the language

题型:单项选择题 A1/A2型题

天冷时,柴油发动机启动电路正常,但不易着火,可能是()电路有故障。

A.电预热

B.蓄电池

C.发电机

D.分电器

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