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【单选题】
设F 1 (x)与F 2 (x)分别为随机变量X 1 与X 2 的分布函数，为使F(x)=aF 1 (x)-bF 2 (x)是某一随机变量的分布函数，在下列给定的各组数值中应取( )．A.
B.
C.
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举一反三
【简答题】A make out B take out C find out D speak out
【单选题】set 集合如何处理重复元素
A.
如果加入一个重复元素将抛出异常
B.
如果加入一个重复元素 add 方法将返回 false
C.
集合通过调用 equals 方法可以返回包含重复值的元素
D.
重复值将导致编译出错
【简答题】Where do you find out about the world’s longest walk? The world's tallest man? The world's oldest woman? You know the answer, of course. It is the Guinness Book of World Records. How would people find...
【单选题】The management consultant wanted to find out ______.
A.
how hard the investment banker worked during his work hours
B.
when people spent time doing unnecessary work in their office.
C.
if people needed vocation after working hard for a certain period of time
D.
whether Americans were really working harder than they had done before
【单选题】—Is there a fog in the evening ? —There _____ be . I’ll make a phone call to find it out .
A.
must
B.
would
C.
will
D.
might
【单选题】He _________ at the gym at the moment. A. works out B.wo rked out
A.
works out
B.
wo rked out
C.
am working out
D.
is working out
【单选题】________ what would happen, none of them could find a way out. [ ]
A.
Left wondering
B.
Having left wondering
C.
Leaving to wonder
D.
Having left to wonder
【单选题】A family of five is really a heavy burden, so we all have to work hard to _____. [ ]
A.
find out
B.
work out
C.
carry out
D.
help out
【单选题】We had wanted to finish our task by noon,but it didn't quite . [ ]
A.
find out
B.
give out
C.
hand out
D.
work out
【简答题】A．To find out if the loss of words is connected with age. B．To find out the relationship between age and dementia (失智症). C．To find out the link between memory and education background. D．To find out a...
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