单项选择题

结构基础考试一级,章节精选,现代技术基础

A.等于120V
B.等于4.8V
C.等于0.6V
D.无法计算
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问答题
China Charity Federation is a phrase for _______. A、 different types of volunteer job B、names of organizations that may need volunteers C、different volunteer projects
单项选择题
A.2B.1C.D.
A.2
B.1
C.
D.
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