A “dead front” switchboard is one （）.<br>A:without switches on it<br>B:with insulated switches and no exposed terminals<br>C:without circuit breakers<br>D:without safety hand nails nor rubber mats

A “dead front” switchboard is one （）.
A:without switches on it
B:with insulated switches and no exposed terminals
C:without circuit breakers
D:without safety hand nails nor rubber mats

出自：海船船员证

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