单项选择题
A.shorten the scope of anchor cable B.increase the scope of anchor cable C.put over the sea anchor D.put over a stern anchor
Production of mechanical foam by a portable in-line foa...
单项选择题Production of mechanical foam by a portable in-line foam proportioner().
A.increases the size of foam bubbles formed B.increases the rate of foam production C.improves the extinguishing properties of foam D.gives the nozzleman more freedom of movement,since it can be placed anywhere in the hose line
Marline is().A.four-stranded sisal lineB.three-stranded...
单项选择题Marline is().
A.four-stranded sisal line B.three-stranded cotton line C.sail twine D.two-stranded hemp cord
LIFTING THE ANCHOR FROM THE BOTTOM is called().A.broach...
单项选择题LIFTING THE ANCHOR FROM THE BOTTOM is called().
A.broaching the anchor B.shifting the anchor C.walking the anchor D.weighing the anchor