The radiotelephone safety message urgently concerned with safety of a person would be pref

You are calling another vessel by radiotelephone using the International Code of Signals.H

The instruction describes completely the ____ and its safety basis.

_ should be defrosteA.The expansion valveB.The safety valveC.The fuel valve

The date and time kept in the radiotelephone log shall commence at （).A.midnightB.noonC.be

The National Safety Council urges drivers and pa

Which of the following safety developments is NOT