单选题Which of the following represents the emergency signal for fire aboard ship?（）AMore than six short blasts and one long blast on the whistleBContinuous blast of the ships whistle for a period of not less than 10 seconds supplemented by the same signal on the general alarmCThree short blasts of the whistle supplemented by the same signal on the general alarmDMore than six short blasts and one long blast on the whistle supplemented by the same signal on the general alarm
单选题
Which of the following represents the emergency signal for fire aboard ship?（）
A
More than six short blasts and one long blast on the whistle
B
Continuous blast of the ships whistle for a period of not less than 10 seconds supplemented by the same signal on the general alarm
C
Three short blasts of the whistle supplemented by the same signal on the general alarm
D
More than six short blasts and one long blast on the whistle supplemented by the same signal on the general alarm
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