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(2006•遂宁)为了作三项调查:①了解炮弹的杀伤半径;②审查书稿有哪些科学性错...
(2006•遂宁)为了作三项调查:①了解炮弹的杀伤半径;②审查书稿有哪些科学性错误;③考查人们对环境的保护意识.其中不适合作普查而适合作抽样调查的个数是( )
A.0
B.1
C.2
D.3
考点分析:
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