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【多选题】
服从泊松分布的条件包括( )A.
平稳性
B.
独立增量性
C.
正态性
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举一反三
【简答题】请从“忙、冷、吵、静、快、辣”中选一种情景,试着写一写。 仿写一个对比句。
【单选题】Few airlines want to impose a total ban on their passengers using electronic devices because
A.
they don't believe there is such a danger as radio interference
B.
the harmful effect of electromagnetic interference is yet to be proved
C.
most passengers refuse to take a plane which bans the use of radio and cassette players
D.
they have other effective safety measures to fall back on
【简答题】A．All airlines have enforced a total ban on electronic devices during flights. B．Portable computers are confirmed as the greatest cause of aircraft crashes. C．It is difficult to predict how electromag...
【单选题】Such electronic devices ______ are used in a radio set are also found in a computer.
A.
which
B.
that
C.
what
D.
as
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