When you are firing a pyrotechnic distress signal，it should be aimed at（）.<br>A:straight overhead<br>B:at the vessel whose attention you are trying to get<br>C:into the wind<br>D:about 60 degrees above the horizon

When you are firing a pyrotechnic distress signal，it should be aimed at（）.
A:straight overhead
B:at the vessel whose attention you are trying to get
C:into the wind
D:about 60 degrees above the horizon

出自：海船船员证

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