单项选择题
A.adjusting the hose supports B.laying out an excess length of hose on deck C.tying off the topping lifts and runners to winch heads D.All of the above
Our starboard derrick boom of hatch No.4 is badly crack...
单项选择题Our starboard derrick boom of hatch No.4 is badly cracked（）that it has become entirely useless.
A.at its goose neck to such a extent B.at it's goose neck to such an extent C.at it's goose neck for such a extent D.at its goose neck to such an extent
Our ship is more than 150 meters in（）.A.heightB.breadth...
单项选择题Our ship is more than 150 meters in（）.
A.height B.breadth C.depth D.length
Our jumbo boom can（）20 tons.A.liftB.riseC.elevateD.hois...
单项选择题Our jumbo boom can（）20 tons.
A.lift B.rise C.elevate D.hoist
