问题
单项选择题
What does the abbreviation VHF stand for?（）
A.Vessel's Hoisting Flag
B.Very High Safety
C.Vessel's Homing Frequency
D.Very High Frequency
答案
参考答案：D
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What does the abbreviation VHF stand for?（）
A.Vessel's Hoisting Flag
B.Very High Safety
C.Vessel's Homing Frequency
D.Very High Frequency
参考答案：D