问题 单项选择题

患者,男,62岁,缺失,缺牙区牙槽嵴条件好,牙龈萎缩,近中舌侧倾斜,前牙区口底较深,基牙,行大支架连接的可摘局部义齿修复

向缺隙侧倾斜,用导线观测器观测,属第几型观测线()

A.一型观测线

B.三型观测线

C.五型观测线

D.二型观测线

E.四型观测线

答案

参考答案:D

解析:

二型观测线:为基牙向缺隙方向倾斜时所画出的观测线。此线在近缺隙侧距[*]面近,而远缺隙侧距[*]面远,说明近缺隙侧的倒凹大,远缺隙侧的倒凹小。

单项选择题
单项选择题

Anthropology is the study of human beings as creatures of society. It (1) its attention upon those. physical characteristics and industrial techniques, those conventions and values, which (2) one community from all others that belong to a different tradition.

The distinguishing mark of anthropology among the social sciences is that it includes for serious study other societies (3) our own. For its purposes any social (4) of mating and reproduction is as significant as our own. To the anthropologist our customs and those of a New Guinea tribe are two possible social schemes for (5) a common problem, and in so far as he remains an anthropologist he is (6) to avoid any weighting of one (7) the other. He is interested in human behavior, not as it is shaped by one tradition, our own, but as it has been shaped by any tradition (8) He is interested in a wide (9) of custom that is found in various cultures, and his object is to understand the way in which these cultures change and (10) , the different forms through which they express themselves and the (11) in which the customs of any peoples function in the lives of the (12) .

Now custom has not been commonly regarded as a (13) of any great moment. The inner workings of our own brains we feel to be uniquely (14) of investigation, but custom, we have a way of thinking, is behavior at its most commonplace. (15) , it is the other way round. Traditional custom is a mass of detailed behavior more astonishing than (16) any one person can ever evolve in individual actions. Yet that is a rather (17) aspect of the matter. The fact (18) first rate importance is the predominant role that custom (19) in experience and belief, and the very great varieties it may (20)

2()

A.distinguish

B.prohibit

C.dispel

D.exempt