Traditionally，the signal for fire aboard s
题型：单项选择题
问题：
Traditionally，the signal for fire aboard ship is（）.
A.more than 6 short blasts and 1 long blast on the whistle，and the same signal on the general alarm
B.continuous sounding of the ship's whistle and the general alarm for at least 10 seconds
C.1 short blast on the whistle
D.alternating short and long blasts on the ship's whistle