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更多“QPSK can offer higher SER performance than 16QAM for an identical SNR value.”相关的问题
What can be inferred from the last paragraph？
A. The economic recovery will see a higher divorce rate.
B. Few couples can stand the test of economic hardships.
C. A stable family is the best protection against poverty.
D. Money is the foundation of many a happy marriage.
A、QPSK can achieve the same bit error rate as BPSK.
B、QPSK can achieve the same symbol error rate as BPSK.
C、the bandwidth efficiency of QPSK is the same as that of BPSK.
D、the bandwidth efficiency of QPSK is twice that of BPSK.
Employers can choose whether or not to offer mandatory benefits.()
参考答案：错误
Reading newspaper can offer most people ______.
A．news
B．comics
C．advertisements
D．sports
What can we learn from the speech？
A．Ground travel can sometimes offer more services than air travel.
B．Ground travel can offer as much services as air travel.
C．Air travel offers more and better services than ground travel.
A.for, of
B.on, in
C.of, for
D.for, for
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