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【简答题】
对现象之间变量研究,统计是从两个方面进行的,一方面是研究变量之间关系的( ), 这种研究称为相关分析,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( )。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
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举一反三
【单选题】Among the left handers, ______.
A.
few are men
B.
most of them are women
C.
half of them are men
D.
two thirds are men
【简答题】A．Most of them are boarding schools. B．None of them take day-pupils. C．Pupils can be admitted without any exam. D．Most of them have their own preparatory schools.
【单选题】How about the machines used in the factories?
A.
Most of them are made in China.
B.
Most of them are imported from abroad.
C.
They made most of them by themselves.
D.
They made all of them by themselves.
【简答题】向心轴承主要承受 载荷,推力轴承主要承受 载荷,向心推力轴承同时承受 载荷。
【简答题】向心轴承主要承受 载荷
【单选题】Which of the following is TRUE of those young computer 'hackers' ?
A.
Most of them are top students majoring in computer programming.
B.
For them, computer programming is the sole purpose for their life.
C.
They can always stay with the computer at the center without eating and sleeping.
D.
They lose all of their friends because of their deep 'love' for the computer.
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