The wind is ESE，and a sailing vessel is steering NW. Which fog signal should she sound?（）<br>A:One blast at one-minute intervals<br>B:One blast at two-minute intervals<br>C:Two blasts at one-minute intervals<br>D:One prolonged and two short blasts at two-minute intervals

The wind is ESE，and a sailing vessel is steering NW. Which fog signal should she sound?（）
A:One blast at one-minute intervals
B:One blast at two-minute intervals
C:Two blasts at one-minute intervals
D:One prolonged and two short blasts at two-minute intervals

出自：海船船员证

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