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已知数据：25，22，21，25，19，26，22，28，24，27，25，26，26，27，29，28，36，24，25，30．在列频数分布表时，如果取组距为3，那么应分成______组，分别是______，______，______，______，______，______．
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举一反三
【简答题】补全单词admi( )( )ion
【单选题】Federal efforts to aid minority businesses began in the 1960’s when the Small Business Administration (SBA) began making federally guaranteed loans and govern- ment-sponsored management and technical ...
A.
The use of MESBIC’s for aiding minority entrepreneurs seems to have greater potential for success than does the original SBA approach.
B.
There is a crucial difference in point of view between the staff and directors of some MESBIC’s.
C.
After initial problems with management and marketing, minority businesses have begun to expand at a steady rate.
D.
Minority entrepreneurs wishing to form. new businesses now have several equally successful federal programs on which to rely.
E.
For the first time since 1960, large corporations are making significant contributions to the development of minority businesses.
【简答题】admi__ __ __ __n
【单选题】听力原文： A senior Pentagon official is disputing published suggestions that the Bush Administration may be poised to resume underground nuclear testing beneath the Nevada desert. Deputy Defense Secretary...
A.
The testing will be resumed if necessary.
B.
The testing must be resumed soon.
C.
The testing will never be resumed.
D.
He cannot rule out the possibility of that testing.
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