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【简答题】
主板上标记为CPU_FAN的插槽,可以插
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皮皮学刷刷变学霸
举一反三
【单选题】We can infer that the key feature of Ningbo campus of Nottingham University is that______.
A.
it has a western style. campus
B.
it charges half the price of Nottingham University
C.
it provides similar education as in Nottingham
D.
it is a joint venture with a Chinese enterprise
【单选题】对QAM，下列哪种说法是错误的？
A.
QAM就是对载波的振幅和相位同时进行调制的一种方式 ；
B.
QAM 是 正交幅度调制 ；
C.
幅相键控（ APK）方式 就是 QAM ；
D.
幅相键控（ APK）方式 与 QAM 在原理上不同。
【单选题】The key feature of ballad is ______.
A.
quick rhythm
B.
slow rhythm
C.
rhymed lyrics
D.
content of love story
【单选题】The key feature of an oligopoly is that there
A.
are many buyers and sellers.
B.
is one seller.
C.
exists product differentiation.
D.
are only a few sellers.
【单选题】QPSK,16QAM,64QAM,256QAM调制方式中,在码元速率相同的情况下,比特速率最高的是
A.
QPSK
B.
16QAM
C.
64QAM
D.
256QAM
【简答题】在较短时间内引起触电者心室颤动而危及生命的最小电流,称为 ,一般通电1s以上, mA的电流足以致命。
【简答题】The key feature of ballad is ______.
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