每个题目用三个电极片。

Use three electrode patches per subject.

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DITA 题目用特别的小节元素指定主题，包括的信息有以下几种

The DITA topic specifies the subject with a specialized section element that includes the following kinds of information

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据说有一道考试题目，讲的是一位旅行者在一座偏僻小岛上，用支票来付饭钱。

There is a legendary exam question about a traveller who paid for a meal on a remote island by cheque.

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