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【单选题】
Diction is important in writing poetry because ( ) .A.
poems are so short that every single word must matter and be chosen with the greatest of care
B.
some poems use very fancy words and sometimes old-fashioned words like “thee” and “thine” and “thou”
C.
Auden and Pound use simple and humble words we might all use in a daily conversation
D.
words do little in conveying images and metaphors
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举一反三
【单选题】With the rapid development of the Internet, _______ communication is done by regular mail.
A.
less
B.
more
C.
little
D.
few
【简答题】What is pulse width?
【单选题】周某,现年七岁,看到很多中学生用MP3听音乐,很是羡幕。有一天乘父母不在家,从家里拿了500元钱去超市买了款MP3。父母回家后批评了周某的行为并去超市要求退货。你认为超市( )
A.
不能退，因为MP3没有质量问题
B.
应该无条件退货，因为周某属于无民事行为能力人，他的买卖行为是无效的
C.
不能退，如果MP3有质量问题可以换
D.
不能退，因为买卖行为是双方自愿的
【简答题】脉冲宽度调制（PWM，Pulse Width Modulation），简称（ ）。四个字
【单选题】Attacking an increasingly popular Internet business practice, a consumer watchdog group Monday filed a complaint with the Federal Trade Commission(FTC), asserting that many online search engines are c...
A.
special fees that Internet users were charged
B.
Federal Trade Commission
C.
Commercial Alert
D.
online search engines
【简答题】What is the "pulse width modulation (PWM)" speed control principle for DC feed motion?
【简答题】pulse width
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