Fusible-link fire dampers are operated by（）.<br>A:8the heat of a fire melting the link<br>B:a break-glass and pull-cable system<br>C:electrical controls on the bridge<br>D:a mechanical arm outside the vent duct

Fusible-link fire dampers are operated by（）.
A:8the heat of a fire melting the link
B:a break-glass and pull-cable system
C:electrical controls on the bridge
D:a mechanical arm outside the vent duct

出自：海船船员证

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