It’s just pipes, water and pumps, but we haven’t heard of anyone else ________ this technology in th

题目简介

It’s just pipes, water and pumps, but we haven’t heard of anyone else ________ this technology in th

题目详情


It’s just pipes, water and pumps, but we haven’t heard of anyone else ________ this technology in this way before.
A.to use B.usingC.useD.used
题型:单选题难度:偏易来源:不详

答案

B

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