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对于额定功率小于16kW的阻焊变压器与焊钳连成一体的焊机,其空载电流的允许值可以比正常值大()倍
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对于额定功率小于16kW的阻焊变压器与焊钳连成一体的焊机,其空载电流的允许值可以比正常值大()倍
A、2
B、2.5
C、3
时间:2021-09-02 13:17
关键词:
青书学堂
河北建筑工程学院
金属工艺学(高起专)
答案解析
B
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