With this sensitive machine, we can find the ______ of a milligram of aspirin in

游客2025-03-28 7

问题 With this sensitive machine, we can find the ______ of a milligram of aspirin in an Olympic-size swimming pool.

选项 A、counterpart
B、equivalent
C、average
D、installation

答案 B

解析 counterpart：同等地位或作用的人或机构；equivalent：对应词，等量物，等价物；average：平均量；installation：安装

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