单项选择题
A.the relative humidity is 100% B.the vapor pressure is at its minimum for the prevailing temperature C.precipitation has commenced D.cloud cover is 100%
The broadcast will normally be made on the two listed f...
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（）.
A.at the same time B.exclusively C.within the same period D.consecutively
THE ANCHOR WAS HEAVED AWEIGH means（）.A.The anchor was w...
单项选择题THE ANCHOR WAS HEAVED AWEIGH means（）.
A.The anchor was weighted B.The anchor was let go C.The anchor was lost D.The anchor was clear of the bottom
The abbreviation RYC in a marine cable generally stands...
单项选择题The abbreviation RYC in a marine cable generally stands for（）.
A.referring to your crew B.reference for your captain C.return to your cabin D.received your cable
