题目内容
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[主观题]
For an E6020 electrode, the number “2” stands for .
A、D.C. straight polarity
B、D.C. reverse polarity
C、all position use
D、Flat and Horizontal only
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发布时间：2022-01-07
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A.10；
B. 200；
C. 25；
D. 30。
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