单项选择题
The phrase “When built” in the Certificate of Vessel’s Nationality definitely means（）.
A.When was your vessel built B.At what time is your vessel building C.When is your vessel built D.At what time you built your vessel
单项选择题 The expression THE AIR IS SATURATED means（）.
单项选择题 The broadcast will normally be made on the two listed frequencies simultaneously except during transmitter maintenance periods when the broadcast will be made on the two frequencies（）.
单项选择题 THE ANCHOR WAS HEAVED AWEIGH means（）.
