问题
单项选择题
In Inmarsat-A, “Priority 3” means（）communication.
A.routine
B.distress
C.urgency
D.safety
答案
参考答案：B
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In Inmarsat-A, “Priority 3” means（）communication.
A.routine
B.distress
C.urgency
D.safety
参考答案：B