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【多选题】
日本人的社交习俗总的特点可以用哪几句话来概括?A.
待人处事彬彬有礼,微笑相迎精神欢喜
B.
见面问好鞠躬行礼,谦让礼貌讲求规矩
C.
语言文明说话客气,交谈乐于轻声细语
D.
白色、黄色受人爱昵,绿色、紫色民间为忌
E.
乌龟、鹤类长寿吉利,狐狸和獾人人厌弃
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【简答题】Why are og computers important? ________________________________________________________________________________________
【简答题】什么是欠定位?为什么不能采用欠定位?什么是过定位?
【单选题】Why are analog optical fiber communication links limited to shorter distances ?
A.
continuous modulation
B.
non-higher signal to noise ratio
C.
great power from the laser
D.
less power from the LED
【简答题】Why are young mannies becoming popular in the United States? [A] They are good at computer s. [B] They are better trained for their jobs. [C] They can get boys in more healthy activities. [D] They...
【单选题】What is an analog signal?
A.
Analog signal is a continuous values
B.
Analog signal is a discrete values
C.
Analog signal is sometimes continuous, sometimes discrete
D.
。
【单选题】What is an analog signal?( )
A.
Analog signal is a continuous values.
B.
Analog signal is a discrete values.
C.
Analog signal is sometimes continuous, sometimes discrete.
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