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【单选题】
先将总体各元素按某种顺序排列 , 并按某种规则确定一个随机起点 , 然后每隔一定的间隔抽取一个元素 , 直至抽取 n 个元素形成一个样本。这样的抽方式称为A.
简单随机抽样
B.
分层抽样
C.
系统抽样
D.
整群抽样
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举一反三
【简答题】[A] from [B] according to [C] through [D] out of
【简答题】[A] According to [B] Except for [C] Thanks to [D] Based on
【简答题】A) for B) to C) according to D) with
【简答题】( )是Hadoop体系中数据存储管理的基础。
【单选题】Eggs are________ size. Which is wrong? [ ]
A.
classified according to
B.
sorted according to
C.
classified by
D.
classified as
【简答题】__________ A) because of B) according to C) thanks to D) regardless of
【单选题】Waste oil should .
A.
be treated according to the C/Es command exactly
B.
be treated according to MARPOL
C.
accumulate in bilges or on tank tops in accordance with MARPOL
D.
discharge to sea at the specified areas
【判断题】According to Shami Chakrabarti, Britain is currently holding 14 innocent people as terror suspects at Belmarsh Prison.
A.
正确
B.
错误
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