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【简答题】
对现象之间变量的研究,统计是从两个方面进行的:一方面研究变量之间关系的密切程度,这种研究称为 ;另一方面是研究关于自变量和因变量之间的变动关系,用数学方程式表达之,称为__ _ _。
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举一反三
【简答题】车钩的三态作用是利用车钩提杆把 提起或落下,通过 与钩铁的作用,使车钩处于闭锁、开锁和全开状态。
【单选题】Hastings's response to Markham's argument that the history of the American government 'shows that it [the Electoral College] is doing something right' would most likely be which of the following?
A.
Under the current system, each voter in Alaska has proportionately three times as much voting power as each candidate in Florida.
B.
We do not know whether or not the American government would have been equally stable had the president been elected by a direct popular election since the beginning.
C.
If the candidate who lost the popular election won the presidency four times in 200 years, there is something wrong with the system.
D.
Maintaining a strong federal system is less important than upholding the principle that each vote should count equally.
E.
A process that maintained the Electoral College but removed the winner-take-all system would substantially reduce the disenfranchisement that occurs under the current system.
【单选题】《危险化学品安全管理条例》第七条规定，国家对危险化学品的生产和储存实行统一规划、 合理布局和严格控制，并对危险化学品生产、储存实行，未经审批，任何单位和个人不得生 产、储存危险化学品。
A.
审批制度
B.
市场调节制度
C.
安全评价制度
D.
监控制度
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