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

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热门试题

单项选择题Our ship is more than 150 meters in（）.

A.height
B.breadth
C.depth
D.length

单项选择题Our jumbo boom can（）20 tons.

A.lift
B.rise
C.elevate
D.hoist

单项选择题On which type davit does the davit head stay at the same height?（）

A.Radial
B.Sheath-screw
C.Quadrantal
D.Gravity

单项选择题On what type of pump would you find an impeller?（）

A.Centrifugal
B.Gear
C.Piston
D.Vane

单项选择题On navigational aids，what does the light characteristic Fl(2+1) mean?（）

A.A flashing light combined with a fixed light of greater brightness
B.Light flashes combined in groups，with a different number of flashes in each group
C.A light showing groups of two or more flashes at regular intervals
D.A fixed light varied at regular intervals by groups of two or more flashes of greater brightness