5B位于牙颈部1/3,属于 A.Ⅰ类洞 B.Ⅱ类洞 C.Ⅲ类洞 D.Ⅳ类洞 E.Ⅴ类

题型:单项选择题

问题:

5B位于牙颈部1/3,属于

A.Ⅰ类洞
B.Ⅱ类洞
C.Ⅲ类洞
D.Ⅳ类洞
E.Ⅴ类洞

考点:口腔五官科主治医师口腔内科基础知识中级口腔主治医师口腔内科学基础知识
题型:单项选择题

患者男性60岁,右上6、7残根,不松动,左上1、2松动三度,根露1/2,测血压160/90mmHg,心电图检查正常。

拔除左上1、2时,最适合选用的麻醉为 ()

A.2%地卡因表面麻醉

B.2%含肾普鲁卡因阻滞麻醉

C.2%含肾普鲁卡因局部浸润麻醉

D.2%地卡因局部浸润麻醉

E.2%利多卡因表面麻醉

题型:单项选择题
阅读短文,根据短文内容,从短文后的五个选项中选出能填入空白处的最佳选项。选项中有一项为多余选项。(共8分,每小题2分)
Note-taking is a skill that can help you do well in all your schoolwork. It can make you confident when you are studying.    1   .
If your teacher writes notes on the blackboard, that’s great. You can copy them or write down the most important facts of all in class. Different teachers do things differently. For example, some teachers may focus on(关注) lots of dates and facts in class, but they only write the important ones on the blackboard.   2   , but they may repeat them.
Don’t try to write down every word in class, or you might miss some important points. Some students really learn better with the help of these notes.
Don’t be afraid to ask your teacher to repeat what you’re missed. If your teacher speaks too fast and you can’t follow what he is saying, you can ask him after class.
Comparing (对比) your notes with your classmates’ can be good for your learning.   3   .
Note-taking also needs organization. Keep notes for each subject in one place, so that you can find everything easily when a test comes.
   4  . If you decide to recopy your notes every evening, you’ll surely have less time to watch TV. But you’ll save time in the coming test.
A.It can also help you and your classmates correct some mistakes
B. It isn’t interesting but you may find it very useful.
C. However, most students don’t know how to take notes.
D. Good note-taking takes time.
E. Other teachers may not write anything down
 
题型:单项选择题

可能发生龋病的危险信号不包括()。

A.致龋菌数量变化

B.牙龈出血

C.菌斑内酸性产物量

D.菌斑内及唾液内pH值,糖代谢反应

E.唾液缓冲能力

题型:单项选择题

根据烧伤病理生理的特点,烧伤病程大致分为以下3期,即()、()和()。

题型:单项选择题

Internet是由分布在世界各地的,数以万计的计算机网络,借助于网络互联设备()。相互连接而形成全球性的互联网。

A.交换机

B.服务器

C.路由器

D.集线器

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