| Throughout history there have been many
unusual taxes levied on such things as hats, beds, baths, marriages, and
funerals. At one time England levied a tax on sunlight by collection from every
household with six or more windows. And according to legend, there was a Turkish
ruler who collected a tax each time he dined with one of his subjects. Why To
pay for the wear and tear on his teeth! Different kinds of taxes help to spread the tax burden. Anyone who pays a tax is said to "bear the burden" of the tax. The burden of a tax may fall more heavily on some persons than on others. That is why the three levels of government in this country use several kinds of taxes. This spreads the burden of taxes among more people. From the standpoint of their use, the most important taxes are income taxes, property taxes, sales taxes, and es A. the rich have to pay more and the poor less. B. a wider range of taxpayers can be included. C. each of three levels of government could get tax money. D. the burden of taxes falls evenly on everybody. [填空题]Any frozen treat can be called ice cream.
[单项选择]铅管对接时，管壁厚度大于4mm的管子应开角度为（）的V形坡口，并留2～3mm的钝边，对口间隙为1～1.5mm。
A. 30° B. 45°～60° C. 90° D. 30°～45° [简答题]我们应该听从这位老人的劝告，现在就回家去。(take someone’s advice)
[单项选择]机械天平横梁上的各种零部件，除了调节（）外，不可任意调动，以免改变天平的计量性能。
A. 螺帽 B. 边刀座 C. 指针 D. 中刀座 [多选题].对由( )授权的组织作出的具体行政行为不服提起行政诉讼的,该组织是被告。
A.法律 B.行政规章 C.行政法规 D.政府规章 [单项选择]研究人员对5000余名美国成年人的健康状况和饮食习惯进行了长达18年的跟踪调查，结果显示，同那些每周吃早餐次数少于3次的对照组相比，天天吃早餐的“好孩子”腰腹部长出赘肉的概率低40%、变胖的风险小43%、患上2型糖尿病的比例也少了34%。即便无法做到每天吃早餐．只要一周里有4天时间保证早上不空着肚子出门，未来患2型糖尿病的风险也可减少24%。
文段意在说明的是( )。 A. 按时吃早餐对抑制肥胖效果显著 B. 提倡人们养成吃早餐的好习惯 C. 糖尿病的发生与早餐不规律有关 D. 富含营养的早餐更有益人体健康 [单项选择]气管内导管套囊应充多少容量气体（）
A. 3～4ml B. 5～6ml C. 7～8ml D. 9～12ml E. 充气至吸气和呼气时刚好不漏气为准 [判断题]公安机关在办理治安案件过程中，.确有必要检查公⺠住所的，.可当场检查，.但应⽴即补.办县级以上公安机关开具的检查证明⽂件。
A.正确 B.错误 [简答题]28. 什么叫耦合系数?什么叫全耦合?
[判断题]如果自制半成品的期末价值小于期初价值，差额价值就为负值，此时应将该值作为零处理。（）
[单选题]急性病毒性肝炎黄疸最早出现的部位是( )
A.手(脚)掌皮肤 B.四肢皮肤 C.口腔黏膜 D.面部皮肤 E.巩膜 [判断题]起重设备的停置，燃料或附属材料的存放环境应制定相关的管理措施，事先应进行查验或提出规定要求，以确保安全。
A.正确 B.错误 [判断题]接触网作业车作业平台应具有平台转向限位装置，作业前应将限位装置关闭。（ ）（职工）（应知应会-铁总运[2017]25号，第五十六条）
A.正确 B.错误 [单选题]幼儿对事物的判断和推理常以( )为依据。
A.他人间接经验 B.初步分析思考 C.事物客观规律 D.自身生活经验 我来回答: 提交
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