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在美国纽约，有这样一种有趣的现象。每天晚上，总有几个时刻，城市的用水量突然增大。经过观察，这几个时刻都是热门电视节目间隔中插播大段广告的时间。而用水量的激增是人们同时去洗手间的缘故。以下哪项作为从上述现象中推出的结论最为合理？（）
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Java允许把一个或多个类收集在一起成为一组，称为包，以便于组织任务。标准Java库分为许多包，如java.lang、java.util、java.net等。包是分层次的，所有的Java包都在java和javax包层次内。要将多个类组织到一个包中，需要使用 【6】 关键字。
语法学家许多年来把英语短语“between you and I”的用法指责为不合乎语法，坚持正确的用法是“between you and me”，用一个宾格在介词后。然而，这样的指责显然是站不住脚的。因为莎士比亚自己在《威尼斯商人》中写道“All debt are cleared between you and I”。 下列哪一个，假如正确，最反对上面的论述？（）
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分为四组，任选一组作答。每题的备选项中，只有1个最符合题意。矿山安全技术 降低喷射混凝土工序粉尘浓度最有效的措施是( )。
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