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6-10 The kids are hanging out. I pass small bands of students in my way to work these mornings. They have become a familiar part of the summer landscape. These kids are not old enough for jobs. Nor are they rich enough for camp. They are school children without school. The calendar called the school year ran out on them a few weeks ago. Once supervised by teachers and principals, they now appear to be "self care". Passing them is like passing through a time zone. For much of our history, after all, Americans arranged the school year around the needs of work and family. In 19th-century cities, schools were open seven or eight hours a day, 11 months a year. In rural America, the year was arranged around the growing season. Now, only 3 percent of families follow the agricultural model, but nearly all schools are s A. long summer vacation slows down the progress of learning B. long summer vacation has been abandoned in Europe C. long summers result in less learning time D. long summers are a result of tradition [单选题]接入中性点绝缘系统的电能计量装置，应采用（ ）电能表。
A.三相三线 B.三相四线 C.单相 D.高稳定感应式 [单选题]Http://www.panda.com.cn代表国家区域名的是（ ）。
A.www B.cernet C.edu D.cn [填空题]SZZ-1000/400型转载机中部槽宽度为1000mm，配用电机总功率为（）。
[单项选择]数据加密技术可以分为3类，下列不属于数据加密技术的是( )。
A. 对称型加密 B. 不对称型加密 C. 可逆加密 D. 不可逆加密 [单选题]自制的汽车吊高处作业平台，应经计算、验证，并制定操作规程，经施工单位（）批准后方可使用。
A.工程部 B.安监部 C.设备管理部 D.分管领导 E.略 F.略 [单选题]并联电力电容器的作用是（）。( )
A.降低功率因数 B. 提高功率因数 C.维持电流 [单项选择]中国公民李某系一公司高级职员，2010年1月份取得翻译收入20000元，从中先后拿出6000元、5000元，通过国家机关分别捐给了农村义务教育和贫困地区。那么李某在2010年1月份应缴纳的个人所得税为( )元。
A. 1040 B. 1440 C. 1664 D. 2240 [简答题]计算题：混凝土的强度等级是按混凝土立方体抗压强度标准值划分的十二个等级，即C7.5、C10、C15、C20……C60。（其中混凝土立方体抗压强度标准值为具有95％保证率的立方体抗压强度。）
[简答题]为什么会发生触电事故？
[单项选择]在下列计划表中，工程项目年度计划的内容是( )。
A. 年度计划项目表 B. 施工形象进度计划表 C. 工程项目一览表 D. 投资计划年度分配表 我来回答: 提交
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