To remedy a leaking fire hose connection at the hydrant，secure the valve and（）.<br>A:replace the gasket in the male coupling<br>B:reduce fire pump pressure<br>C:replace the gasket in the female coupling<br>D:rethread the male coupling

To remedy a leaking fire hose connection at the hydrant，secure the valve and（）.
A:replace the gasket in the male coupling
B:reduce fire pump pressure
C:replace the gasket in the female coupling
D:rethread the male coupling

出自：海船船员证

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