单项选择题
A.
B.
C.
D.
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单项选择题
A.等于120VB.等于4.8VC.等于0.6VD.无法计算
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
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