下图为电动机接触器互锁(即电气互锁)的可逆启动控制电路图的是()
A-<img src=/resource/major/skill/test/import/27142/jd4e3037_a.png>
B-<img src=/resource/major/skill/test/import/27142/jd4e3037_b.png>
C-<img src=/resource/major/skill/test/import/27142/jd4e3037_c.png>
D-<img src=/resource/major/skill/test/import/27142/jd4e3037_d.png>
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下图表示三相中部调压抽头方式的是()
A-<img src=/resource/major/skill/test/import/27142/je3e5013_a.png>
B-<img src=/resource/major/skill/test/import/27142/je3e5013_b.png>
C-<img src=/resource/major/skill/test/import/27142/je3e5013_c.png>
D-<img src=/resource/major/skill/test/import/27142/je3e5013_d.png>