下述有关配电所的设置要求中哪个是错误的______
A. 不宜设在地下室的最底层
B. 不应设在超高层建筑的避难层
C. 不应设在污染源的下风侧
D. 不应设在厕所、浴室等场所的下正方或贴邻
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Take the case of public education alone. The principal difficulty faced by the schools has been the tremendous increase in the number of pupils. This has been caused by the advance of the legal age for going into industry and the impossibility of finding a job even when the legal age has been reached. In view of the technological improvements in the last few years, business will require in the future proportionately fewer workers than ever before. The result will be still further raising of the legal age for going into employment, and still further difficulty in finding employment when that age has been attained. If we cannot put our children to work, we must put them in school. We may also be quite confident that the present trend toward a shorter day and a shorter week will be maintained. We have developed and shall continue to have a new leisure class. Already the public agencies for adult education are swamped by the tide that has swept over them since the depression began. They will be little better off when it is over. Their support must come from the taxpayer. It is surely too much to hope that these increases in the cost of public education can be borne by the local communities. They cannot care for the present restricted and inadequate system. The local communities have failed in their efforts to cope with unemployment. They cannot expect to cope with public education on the scale on which we must attempt it. The answer to the problem of unemployment has been Federal relief. The answer to the problem of public education may have to be much the same, and properly so. If there is one thing in which the citizens of all parts of the country have an interest, it is in the decent education of the citizens of all parts of the country. Our income tax now goes in part to keep our neighbors alive. It may have to go in part as well to make our neighbors intelligent. We are now attempting to preserve the present generation through Federal relief of the destitute (贫民). Only a people determined to ruin the next generation will refuse such Federal funds as public education may require. (378 words) Why does the author say "Only a people determined to ruin the next generation will refuse such Federal funds as public education may require" (Lines 11~ 12, Para. 3)
A. Only by appropriating adequate Federal funds for education can the next generation have a bright future.
B. Citizens of all parts of the country agree that the best way to support education is to use Federal funds.
C. People all over the country should make contributions to education in the interest of the next generation.
D. Educated people are determined to use part of the Federal funds to help the poor.
一级负荷的供电电源______由双重电源供电。
A. .宜
B. .可
C. .应
D. 不应
下列叙述中哪组答案是正确的______ Ⅰ交流电安全电压是指标称电压在65V及以下 Ⅱ消防联动控制设备的直流控制电源电压应采用24V Ⅲ电缆隧道内照明电压应低于36V Ⅳ高层建筑乘客电梯,轿顶及井道照明电源电压宜为36V
A. Ⅰ、Ⅱ、Ⅲ
B. Ⅱ、Ⅲ、Ⅳ
C. Ⅰ、Ⅲ、Ⅳ
D. Ⅰ、Ⅱ、Ⅳ
成排布置的低压配电屏,其屏后通道两个出口之间距离超过多少时,其间还应增加出口______
A. 8m
B. 15m
C. 20m
D. 25m