（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.<br>A:Ring type<br>B:Fork type<br>C:Spade type<br>D:Push on pull off type

（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
A:Ring type
B:Fork type
C:Spade type
D:Push on pull off type

出自：海船船员证

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