某市疾病预防控制中心接到辖区内一所小学发生传染病疫情的报告，学生共有585名，老师和工勤人员20名，患者均为学生，共有31例，首发病例于4月22日出现发热、皮疹，当天最高体温达38.5℃，1天后热退，皮疹波及面部躯干和四肢，最严重部位是背部，皮疹持续2周，康复后5月8日上学。大多数患者集中在5月23-5月28日发病。
下列有关水痘传染性描述，正确的是（）| A scientist who wants to predict the
way in which consumers (消费者) will spend their money must study consumer
behavior. He must obtain data both on the resources of consumers and on the
motives that tend to encourage or discourage money spending. (3) {{U}}If an economist were asked which of three groups borrow most--people with rising incomes, stable incomes, or decreasing incomes, his probable answer would be those with decreasing incomes.{{/U}} Actually, in the years 1947-1950, the answer was people with rising incomes. People with decreasing incomes were next and people with stable incomes borrowed the least. This shows us that traditional assumptions (假设) about earning and spending are not always reliable. Another traditional assumption is that if people who have money expect prices to go up they will hasten to buy. If A. price increases always stimulate people to hasten to buy things B. rising prices may make people put off their purchase of certain things C. women are more sensitive to the rising prices than men D. the expectations of price increases often make buyers feel angry [单选题]客户停送电联系人由（ ）担任。
A.客户指定的人员 B.台区经理 C.账务联系人 D.配电人员 [单选题] 两台及两台以上链条葫芦起吊同一重物时,重物的重量应( )每台链条葫芦的允许起重量。
A.不小于 B.不大于 C.等于 D.大于 [判断题]直线与圆曲线连接处的正矢等于圆曲线正矢的三分之一。（ ）
A.正确 B.错误 [单项选择]
A. The invention of the umbrella. B. The popularity of the umbrella. C. The history and use of the umbrella, D. The development of tile umbrella. [判断题]舌后坠是麻醉中常见的上呼吸道梗阻。
[单项选择]
我国《防止船舶污染海域管理条例》规定，载运有毒害、含腐蚀性货物的船舶排放含有该类物质的洗舱水时，必须符合下列哪些条件（）。 A. Ⅰ～Ⅲ B. Ⅰ～Ⅳ C. Ⅰ、Ⅱ、Ⅳ D. Ⅰ、Ⅲ、Ⅳ [单项选择]在城区以外的区域，1800MHzTDMA系统接受机的输入端射频信号电平的最低容限值为（）dBm。
A. -78 B. -90 C. -92 D. -94 [判断题]中间站利用本务机车调车,一批作业不超过三钩时,可口头传达计划。( )
A.正确 B.错误 [判断题]生产经营单位主要负责人有责任保证本单位安全生产投入的有效实施。()
A.正确 B.错误 [单项选择]钢与铝及铝合金采用钨极氩弧焊方法焊接时，应将钢的一侧加工成70°坡口，且镀上活化层，这样可提高焊接接头的强度。一般对低碳钢及低合金钢表面镀（）。
A. 铝 B. 锌 C. 锡 D. 铜 [单选题]全部分包工作完成后，经劳务作业发包人认可后（ ）天内，劳务作业承包人向劳务作业发包人递交完整的结算资料，双方按照本合同约定的计价方式，进行劳务报酬的最终支付。
A.7 B.14 C.21 D.30 我来回答: 提交
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