High pressure and low pressure alarms must be tested（）.<br>A:no earlier than 24 hours prior to loading<br>B:no later than 24 hours prior to loading<br>C:anytime prior to loading<br>D:weekly

High pressure and low pressure alarms must be tested（）.
A:no earlier than 24 hours prior to loading
B:no later than 24 hours prior to loading
C:anytime prior to loading
D:weekly

出自：海船船员证

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