单选题After having activated the emergency position indicating radio beacon，you should（）.Aturn it off for 5 minutes every half-hourBturn it off and on at 5 minute intervalsCturn it off during daylight hoursDleave it on continuously
单选题
After having activated the emergency position indicating radio beacon，you should（）.
A
turn it off for 5 minutes every half-hour
B
turn it off and on at 5 minute intervals
C
turn it off during daylight hours
D
leave it on continuously
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