The initial voltage of self-excitation generator set up by（）<br>A:residual magnetism<br>B:voltage regulator<br>C:electrical current for excitation<br>D:the other running generator

The initial voltage of self-excitation generator set up by（）
A:residual magnetism
B:voltage regulator
C:electrical current for excitation
D:the other running generator

出自：海船船员证

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