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【多选题】
某地纬度为 30°N ,春、秋分时,( )。A.
0°
B.
23.5°
C.
正午太阳高度角为30°
D.
正午太阳高度角为60°
E.
正午太阳高度角为90°
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【单选题】At its best, any prison is so unnatural a form. of segregation from normal life that-- like too-loving parents and too zealous religion and all other well-meant violations of individuality-it helps to...
A.
makes people incapable of living independently
B.
doesn't train people for useful work
C.
is too kind for people to live freely
D.
is too strict for people to live freely
【单选题】For any normal distribution, any value less than the mean would have a _______.
A.
positive z -score
B.
negative z -score
C.
negative variance
D.
negative probability of occurring
【单选题】The area to the left of the mean in any normal distribution is _______.
A.
equal to the mean
B.
equal to 1
C.
equal to the variance
D.
equal to 0.5
【单选题】The total area underneath any normal curve is _______.
A.
equal to the mean
B.
equal to 1
C.
equal to the variance
D.
equal to the coefficient of variation
【单选题】Any normal boy of his age would be ____ with thisgame. [ ]
A.
common
B.
familiar
C.
similar
D.
regular
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