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【单选题】
若a=1,b=2,那么(a or b)的值为 。A.
2
B.
1
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【单选题】As the deadline for my term papers is drawing near, I have to______, which has totally exhausted me.
A.
bide my time
B.
put pen to paper
C.
set aside
D.
race the clock
【单选题】The maximum pressure developed by a waste heat boiler is determined by the main engine exhaust ______.
A.
gas composition
B.
gas temperature
C.
pressure
D.
timing
【判断题】The clothing manufacturers are so interested in people like Katy because she is good-looking.
A.
正确
B.
错误
【多选题】Kruskal-Wallis检验H统计量( )。
A.
是秩和统计量
B.
可与H临界值进行比较,作出判断
C.
可与Z分布临界值表进行比较,作出判断
D.
可与t分布临界值表进行比较,作出判断
E.
可与卡方分布临界值表进行比较,作出判断
【单选题】Kruskal-Wallis检验主要用于检验()
A.
两个配对总体的分布是否相同
B.
两个独立总体的分布是否相同
C.
K个配对总体的分布是否相同
D.
K个独立总体的分布是否相同
【单选题】Engine room fires have been started by neglected oil leaks dripping on to hot pipes or exhaust manifolds _____ insulation has not been replaced after maintenance.
A.
which
B.
when
C.
whose
D.
what
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