被照体因素对照片对比度无影响的是() A.被照体的原子序数 B.被照体的密度 C.被

题型:单项选择题

问题:

被照体因素对照片对比度无影响的是()

A.被照体的原子序数

B.被照体的密度

C.被照体的面积

D.被照体的厚度

E.组织中的空腔或对比剂

考点:放射医学(医学高级)放射医学综合复习题放射医学综合复习题题库
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以下说法不正确的是______。

A.第112号化学元素命名为“Copernicium”是为了纪念著名天文学家哈雷
B.李政道和杨振宁是最早获诺贝尔奖的美国籍华人
C.地震按震级大小划分为弱震、有感地震、中强震和强震
D.截至2010年9月,我国南极陨石收集量仅次于日本、美国,位居世界第三

题型:单项选择题

Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened (91) . As was discussed before, it was not (92) the 19th century that the newspaper became the dominant pree-leetronie (93) , following in the wake of the pamphlet and the book and in the (94) of the periodical. It was during the same time that the communications revolution (95) up, beginning with transport, the railway, and leading (96) through the telegraph, the telephone, radio, and motion pictures (97) the 20th-eentury world of the motor ear and the airplane. Not everyone sees that process in (98) . It is important to do so.
It is generally recognized, (99) , that the introduction of the computer in the early 20th century, (100) by the invention of the integrated circuit during the 1960s, radically changed the process, (101) its impact on the media was not immediately (102) . As time went by, computers became smaller and more powerful, and they became "personal" too, as well as (103) , with display becoming sharper and storage (104) increasing. They were thought of, like people, (105) generations, with the distance between generations much (106)
It was within the computer age that the term" information society" began to be widely used to describe the (107) within which we now live. The communications revolution has (108) both work and leisure and how we think and feel both about place and time, but there have been (109) views about its economic, political, social and cultural implications. "Benefits" have been weighed (110) "harmful" outcomes. And generalizations have proved difficult.

A.deeper

B.fewer

C.nearer

D.smaller

题型:单项选择题

9月男婴,生后因母乳不足,混合喂养,未添加辅食,经常出现夜惊,多汗,烦闹不宁,近一周加重,此患儿到门诊就诊时

体格检查最易发现的阳性体征为

A.皮肤弹性差

B.皮下脂肪明显减少

C.方颅,前囟大,乳牙未萌出

D.体检正常

E.双下肢淤点、淤斑

题型:单项选择题

疏水阀后应设()。

A.放汽管

B.冲洗管

C.检查管

题型:单项选择题

遥控功能就是指主控站能够对各终端进行跳、合闸控制的功能。()

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