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【单选题】
下列情况中运动的物体不能被看做质点的是 ( )A.
研究绕地球运转的“神舟”七号飞船的运行情况
B.
研究飞行中直升飞机上的螺旋桨的转动情况
C.
研究在水平推力作用下沿水平地面运动的木箱
D.
帆船比赛中确定帆船在大海中的位置时
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举一反三
【单选题】The width of each bar in a histogram corresponds to the
A.
differences between the bounaries of the class.
B.
number of observations in each class.
C.
midpont of each class.
D.
percentage of observations in each class.
【单选题】The width of each bar in a histogram corresponds to the
A.
differences between the boundaries of the class
B.
number of observations in each class
C.
midpoint of each class
D.
percentage of observations in each class
【简答题】国际私法和国际公法之比较。
【简答题】medical____
【单选题】In a histogram, the proportion of the total area that must be to the right of the mean is:
A.
less than 0.50 if the distribution is skewed to the left.
B.
exactly 0.50.
C.
more than 0.50 if the distribution is skewed to the right.
D.
exactly 0.50 if the distribution is symmetric and unimodal.
E.
exactly 1.0 if the distribution is symmetric and bimodal.
【单选题】In a histogram, the proportion of the total area that must be to the left of the median is:
A.
exactly 0.50.
B.
less than 0.50 if the distribution is skewed to the left.
C.
more than 0.50 if the distribution is skewed to the right.
D.
between 0.25 and 0.60 if the distribution is symmetric and unimodal.
【简答题】二 、把下列形容词转化成副词。 1. 2.logical 3.quick 4.artificial 5.rapid 6.real 7.possible 8.total 9.medical 10.true 11.universal 12.important
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