A yellow signal floating in the air from a small parachute，about 300 feet above the water，would indicate that a submarine（）. -题库考试答案搜索网

A yellow signal floating in the air from a small parachute，about 300 feet above the water，would indicate that a submarine（）.

单选题

2022-05-21 11:48

A、has fired a torpedo during a drill
B、is about to rise to periscope depth
C、is on the bottom in distress
D、is disabled and unable to surface

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正确答案

B

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标签：安全通信

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