The ratio of the work done by the machine______the work done on it is called the efficiency of the machine.

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问题 The ratio of the work done by the machine______the work done on it is called the efficiency of the machine.

选项 A、against
B、with
C、to
D、for

答案C

解析题中ratio与介词to是固定搭配，the ratio of A to B的意思为“A与B之比(率)”，故选C。

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本试题收录于：大学英语三级A级题库大学英语三级分类

大学英语三级A级

大学英语三级

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The ratio of the work done by the machine______the work done on it is called the efficiency of the machine.

大学英语三级A级

大学英语三级

Whodoyousupposewillbethereadersofthispassage?Whilethewifeisonabusinesstrip,whatshouldsheencourageherhus

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Howoftenhastheaffectsofsmokingandsecond-handsmokebeenreportedinthenewspaper?Howdidtheauthorfeelabouthermo

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