毛囊角化病的致病基因为（）。 A.ATP2A2基因 B.ATP2C1基因 C.ABC

心理调适

小明用纸做的“锅”装上适量水放在酒精灯火焰上烧（酒精灯火焰不能烧到水面以上），结果水烧开了而“锅”不会烧毁（水的沸点是100℃，纸的着火点是190℃，酒精灯外焰温度约为800℃）．关于“锅”不会烧毁的主要原因是（　　）

A．纸的着火点低于水的沸点，所以纸盒不会烧毁

B．纸的着火点高于火焰的温度，所以纸盒不会烧毁

C．纸的散热性好，所以纸盒不会烧毁

D．水的沸点低于纸的着火点，水沸腾后要不断吸热且温度不变，所以纸盒不会烧毁

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．institutional

B．universal

C．fundamental

D．instrumental

数据库的逻辑模式设计阶段，要将将总体E-R模型转换成 ______。

变电站自动化系统应具有同期功能，同期功能在远动装置上完成。（）