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问题 多项选择题

关于不间断电源铅蓄电池的安装，下列说法错误的有( )。

A．蓄电池须设在专用室内，室内的门窗、墙、木架、通风设备等须涂有耐酸油漆保护，地面须铺耐酸砖，并保持一定温度。室内应有上、下水道

B．电池室内应保持严密，门窗上的玻璃应为毛玻璃或涂以白色油漆

C．照明灯具的装设位置，需考虑维修方便，所用导线或电缆应具有耐酸性能。采用防爆型灯具和开关

D．取暖设备在室内不准有法兰连接和气门，距离电池不得小于550mm

E．充电设备要设在电池室内

答案

参考答案：D,E

判断题

目前，我国的债券流通市场由银行间债券市场和交易所债券市场组成。()
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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 between. As was discussed before, it was not until the 19th century that the newspaper became the dominant pre- electronic (61) , following in the wake of the pamphlet and the book and in the (62) of the periodical. It was during the same time that the communications revolution (63) UP, beginning with transport, the railway, and leading on through the telegraph, the telephone, radio, and motion pictures into the 20th-century world of the motor car and the air plane. Not everyone sees that process in (64) . It is important to do so.

It is generally recognized, (65) , that the introduction of the computer in the early 20th century, (66) by the invention of the integrated circuit during the 1960s, radically changed the process, although its impact on the media was not immediately (67) . As time went by, computers became smaller and more powerful, and they became "personal" too, as well as (68) , with display becoming sharper and storage (69) increasing. They were thought of, like people, (70) generations, with the distance between generations much (71) .

It was within the computer age that the term "information society" began to be widely used to describe the (72) within which we now live. The communications revolution has (73) both work and leisure and how we think and feel both about place and time, but there have been (74) view about its economic, political, social and cultural implications. "Benefits" have been weighed (75) "harmful" outcomes. And generalizations have proved difficult.

（71）处填（）。

A．deeper

B．fewer

C．nearer

D．smaller
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