A tug is best positioned for towing and maneuvering on rivers and other restricted waters where wave action is limited when（）.
1、A bridle for an ocean tow consists of（
A bridle for an ocean tow consists of（）.Atwo chains of equal lengthBa single nylon pendant rove through a heavy ring free to move on the p...
2、An azimuth angle for a body is measure
An azimuth angle for a body is measured from the（）.Aobserver's meridianBGreenwich meridianCbody's meridianDzenith distance
3、Which extinguishing agent is best for
Which extinguishing agent is best for use on a magnesium fire?（）AWaterBSandCCO2DDry chemical
4、What is best suited for fighting a fir
What is best suited for fighting a fire in a ballast control room?（）AAutomatic sprinkler systemBSteam smothering systemCDry chemical systemDCarbon dioxide system
5、What is the best instrument for establ
What is the best instrument for establishing a safe working area before welding in a confined space? （）AAn oxygen indicatorBA combustible gas indicatorCA combination combustible gas and oxygen indicatorDA flame safety lam
6、A fiber towing hawser is readied for s
A fiber towing hawser is readied for service by（）.Aspooling it on a winch catheadBcoiling it in a counterclockwise direction on the fantailCfaking it on deck in a fore and aft directionDspooling it on a reel lying on its side to prevent rolling