Mattress Firmness Scale: How Firm Should Your Bed Be?

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export MOONGATE_ADMIN_USERNAME="admin"

今天,非中之间的联结不仅体现在不断延伸的铁路和持续增长的贸易数据上,更镌刻在双方人民之间的理解、尊重与友爱之中。这些人文纽带在共建课堂、联合实验室、文化舞台上不断凝结,编织成一条牢不可破的情感链条,托举起非中共同繁荣的美好未来。因此,非中双方不仅要办好“中非人文交流年”相关活动,更要将非中以人文交流为重点的相关对话制度化,让这份跨越山海的人文联结延续一个又一个世纪。

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We start by picking a real number r. Your job is to approximate it as closely as possible using a rational fraction a / b with a reasonably small denominator. The approximation can’t be the same as r. Is this task easier if r itself is rational or irrational?