病人左侧多根双段肋骨骨折,吸气时骨折处胸壁陷落,呼气时反而隆起。此为()。 A.气胸

题型:单项选择题 A3/A4型题

问题:

病人左侧多根双段肋骨骨折,吸气时骨折处胸壁陷落,呼气时反而隆起。

此为()。

A.气胸

B.血胸

C.血气胸

D.反常呼吸

E.纵隔气肿

考点:中医骨伤科学主治医师躯干骨折躯干骨折题库
题型:单项选择题 A3/A4型题

关于精车螺纹实验具体操作说法错误的是()。

A、将试切件夹在车床两顶尖间,用拨盘带动工件旋转

B、采用高速钢60度标准螺纹车刀

C、切削用量n═1gr∕min

D、以上都不对

题型:单项选择题 A3/A4型题
阅读下面短文,根据其内容,完成表格中所缺的信息。
Some people prefer to make friends with people who are very much like them while others prefer friends who are very different. There are advantages to both types of friendship. If a man chooses a friend similar to himself, there is no problem that they will share many common interests. They may have similar goals in life. This means that they will be able to help each other in achieving their goals. Two people who are very similar will feel comfortable with each other and may understand each other' s feelings better. Their friendship may be deeper and last longer.
There are also many advantages of making friends with someone of opposite interests and even character. In this type of friendship, the two people complement (补充) each other. If one is weak in some ways, the other is strong. While two people with similar goals may find themselves in competition, hut those who want different things can always support each other. Those who have different interests can introduce each other to new experience and so enrich (丰富) their knowledge.
A friend who is unlike me may be challenging, but a similar friend is familiar and safe.
Friendship
Friends
   6 
 
One type of friendship
 
Similar to each other
l Share common interests.
l Have similar goals in life,
l Be  7 for their goals
l Friendship lasts longer.
 
The other type of friendship
 
Opposite to each other
l Complement each other.
l Support each other.
l Make 8  in knowledge.
Topic:  9 
Author’s attitude:Preferring    10 
题型:单项选择题 A3/A4型题

DNA分子具有多样性和特异性的原因是  [ ]

A.碱基的种类不同      

B.脱氧核糖的排列顺序不同 

C.碱基的配对方式不同    

D.碱基对的排列顺序不同

题型:单项选择题 A3/A4型题

细胞一生要依次经过哪些个阶段()

A.未分化、分化、衰老、凋亡

B.分化、衰老、未分化、凋亡

C.衰老、分化、未分化、凋亡

D.分化、未分化、衰老、凋亡

题型:单项选择题 A3/A4型题

冬季作业严禁戴无耳孔的棉帽,冰雪天室外作业人员,必须穿()或系草绳。

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