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【多选题】
以下选项哪些是OFDM的主要缺点A.
易造成自干扰
B.
信号峰均比过高
C.
时间同步要求较高
D.
频率同步要求较高
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举一反三
【简答题】____________________ means an arrangement of cells representing the combinations of literals in a Boolean expression and used for a systematic simplification of the expression.
【单选题】systematic means:
A.
characterized by order and planning
B.
tending to be creative or innovative
C.
inclined to be gentle
D.
characterized by energetic effort
【简答题】A: I’m William, the personnel manager. Nice to meet you, Cathy. B: Nice to meet you, too. A: You are applying for the job of program leader? B: Yes, that’s right. A: Well, (1) ________________________...
【简答题】Britain Today Food British people like good food, and more than half of them go to a restaurant every month. Fast food is also very popular— 30% of all s have a hamburger every three months, but ...
【简答题】Under normal conditions the act of communication requires the presence of at least two persons: one who sends and one who receives the communication. In order to communicate thoughts and feelings, the...
【简答题】Britain Today Food British people like good food, and more than half of them go to a restaurant every month. Fast food is also very popular— 30% of all s have a hamburger every three months, but ...
【判断题】Research means a systematic investigation, including research development, testing and evaluation, designed to develop or contribute to generalizable knowledge.
A.
正确
B.
错误
【单选题】Passage 4The means of communication are too numerous and varied for systematic classification; therefore, the analysis must begin with the means of receiving communication. Feelings may be simply comm...
A.
gesturing
B.
smelling
C.
handshaking
D.
hand-stroking
【单选题】The word ( ) means 'a systematic compilation or revision of law or legal principles that is arranged especially by subject '.
A.
legislature
B.
prosecute
C.
statute
D.
code
【简答题】阅读理解。 Britain Today Food British people like good food,and more than half of them go to a restaurant every month. Fast food is also very popular-30% of all s have a hamburger every three months, ...
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