One of the blueprints show the internal structure of the engine clearly.
One of the blueprints show the internal structure of the engine clearly.
【正确答案】:show → shows/showed
【题目解析】:句中没有表明时间的词,故句子时态可用一般现在时或一般过去时。one of意为“其中之一”,如果句子时态是一般现在时,谓语动词要用单数。
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