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【单选题】
在一个八进制数的右边添加一个零,那么这个数 ( )。A.
扩大2倍
B.
缩小8倍
C.
扩大8倍
D.
缩小2倍
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皮皮学刷刷变学霸
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【单选题】Why would anyone want to set aside a day to honor a lowly little groundhog? The answer to that question is not certain, but a group of people get together every February 2 in Punxsutawney, Pennsylvani...
A.
He's cute and playful, and children love to watch him.
B.
He's looking for food and the people want to help him find it in the snow.
C.
Many people believe him to be a harbinger of spring.
D.
The people want to be sure he is alive after such a long winter.
【单选题】At first glance, why anyone would want to save California condors is not entirely clear. Unlike the closely related Andean condors with their white neck fluff or king vultures with their brilliant bla...
A.
its resemblance to Andean condor
B.
its ability to glide
C.
its colorful plumage
D.
its blunt talons
【单选题】Could you show me ________ ? A. how can I get to the station B. where is the station C. how could I get to the station D. how I can reach the station
A.
B.
C.
D.
D
【简答题】夏柯（Charcot）三联征和雷诺（Reynolds）五联征分别时什么？
【多选题】要查找某主题文献,可先利用二次文献信息查找文献和文献线索,并进而根据文献线索获取一次文献全文,以下哪些不属于二次文献信息源?
A.
INSPEC
B.
EI
C.
EBSCO
D.
ACS
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