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【单选题】
双生子佯谬的问题是谁提出来的？（）A.
郎之万
B.
惹
C.
爱因斯坦
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】I miss the noise and activity of the city. (英译汉)
【单选题】Why are scientists surprised by the findings in their noise study? ______
A.
Because noise is an unwanted waste for human beings.
B.
Because the world is becoming more and more noisy.
C.
Because they have learned that noise is also a kind of pollution.
D.
Because people knew little about noise before.
【单选题】I can ______ some noise while I’m studying, but I can’t stand very loud noise.
A.
put up with
B.
get rid of
C.
have effect on
D.
keep away from
【单选题】How annoying ____! [ ]
A.
that they are making so much noise
B.
is they are making so much noise
C.
is it that they are making so much noise
D.
it is that they are making so much noise
【简答题】相位裕量是当系统的开环幅频特性等于1时，相应的相频特性离（）的距离。
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