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【简答题】
直线回归方程中，参数a、b是如何求得的?具有什么样的意义?
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举一反三
【单选题】n general, the best way for replacement of lamp is _____.
A.
after the point is reached at which the failures begin to increase rapidly
B.
before the point is reached at which the failures begin to increase rapidly
C.
before the point is reached at which the failures begin to increase slowly
D.
after the point is reached at which the failures begin to increase slowly
【单选题】Which of the following is the same as the underlined part in the example? The point is, many parents do this habitually.
A.
He was determined to prove this point .
B.
Of course everyone may do this, but that is not the point .
C.
At some point during the vocation, he wanted to go back home.
D.
This is only true up to a point .
【多选题】The ( ) and ( ) of a pair of ( X , Y ) coordinates determines the X and Y distances of a point from the origin and the quadrant in which the point is located.
A.
value
B.
point
C.
sign
D.
G90
【单选题】The point is that no medicine is ________ for children when they are infected with the hand-foot-mouth disease (HFMD). [ ]
A.
alternative
B.
absurd
C.
available
D.
harmony
【单选题】Why does the professor say this:
A.
She doesn't think the point is very important.
B.
She is trying to finish the lecture on time.
C.
She thinks the idea will fit in better later on.
D.
She doesn't want the student to interrupt her.
【单选题】The point is that the new, the different, is almost by __________ scary.
A.
definition
B.
limitation
C.
declaration
D.
origin
【单选题】德国联邦教研部在( )柏林授予包括两名中国抉择在内的全球25名青年科研人员"绿色精英奖”,以表彰他们在可持续发展领域的创新研究。
A.
2018年10月22日
B.
2018年9月7日
C.
2018年10月24日
D.
2018年9月5日
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