单项选择题
A.is calling at B.are calling at C.is calling on D.are calling on
Stand by（）VHF CH16.A.ofB.onC.inD.at
单项选择题Stand by（）VHF CH16.
A.of B.on C.in D.at
M/V Yanyuan No.1.（）is your course and speed?A.WhenB.Whi...
单项选择题M/V Yanyuan No.1.（）is your course and speed?
A.When B.Which C.That D.What
When（）the pilot embark?A.willB.shallC.canD.may
单项选择题When（）the pilot embark?
A.will B.shall C.can D.may
