单项选择题
A.near B.short C.close D.small
The present voyage of my ship began at the port of Shan...
单项选择题The present voyage of my ship began at the port of Shanghai after loading 8 000 tons of Cargo on board and ended after discharging the Cargo at the port of Hong Kong，which was（）.
A.the port of destination B.the next port of call C.the port of arrival D.the last port of call
The height of a VHF radio antenna is more important tha...
单项选择题The height of a VHF radio antenna is more important than the power output wattage of the radio because（）.
A.VHF communications are basically line of sight B.the air is more dense the higher you go C.salt water is a poor conductor of sound D.sea water absorbs the radiated energy
The generators on your rig have shut down，leaving you w...
单项选择题The generators on your rig have shut down，leaving you without navigation lights. Which emergency signal would you transmit over the VHF radio to alert vessels in the area of your predicament? （）
A.Mayday，Mayday，Mayday B.Pan，Pan，Pan C.Security，Security，Security D.Lights out，Lights out，Lights out
