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 mark or place at which a vessel comes under obligatory entry，transit，or escort procedure is know as（）.

All VHF marine band radios operate in the simplex mode，which means that（）.

What is meant by veering the anchor chain? （）

I’d like to know something about the cargo condition at the loading port（）detail.

What does the abbreviation VHF stand for?（）

The weather is often（）in a high-pressure area.

Some goods are missing（）terrible weather.

A call between any two ship stations on an intership working frequency shall have a maximum duration of（）.

How should the letter O be pronounced when spoken on the radiotelephone?（）