更多"A flooded leg on a lift boat would "的相关试题:
[单项选择]A flooded leg on a liftboat would adversely affect the vessel’s stability underway by（）.
A. increasing the righting moment
B. decreasing the vessel's displacement
C. increasing the reserve buoyancy
D. shifting the CG (center of gravity) off center
[单项选择]You are operating a lift boat.When beginning to jack down you should（）.
A. Jack down one leg at a time
B. Jack up first，then down
C. Undog doors to the engine room
D. Assemble all personnel on the main deck
[单项选择]（）he had not hurt his leg,John would have won the race.
A. If
B. Since
C. Thongh
D. When
[单项选择]The Mariner’s Handbook （）general information affecting navigation and is complementary to the Sailing Directions．
A. giving
B. give
C. gives
D. given
[单项选择]The total leg load reactions on an independent leg，self-elevating unit include static and（）.
A. environmental loading
B. variable loading
C. fixed loading
D. basic loading
[简答题]集装箱船舶吊装卸作业方式（Lift on/Lift off system）有何优点？
[单项选择]Is the pilot boat （） station
A. in
B. at
C. with
D. on
[单项选择]When evacuating a seaman by helicopter lift，which course should the ship take?（）
A. Downwind so that the apparent wind is close to nil
B. A course that will keep a free flow of air，clear of smoke，over the hoist area
C. A course that will have the hoist area in the lee of the superstructure
D. With the wind dead ahead because the helicopter is more maneuverable when going into the wind
[单项选择]David injured his leg playing football yesterday. Really?（）
A. Who did that?
B. What's wrong with him?
C. How did that happen?
D. Why was he so careless?
[单项选择]When evacuating a seaman by helicopter lift，the vessel should be（）.
A. stopped with the wind dead ahead
B. stopped with the wind on the beam
C. underway with the wind 30°on the bow
D. underway on a course to provide no apparent wind
[单项选择]The best way to lift many small articles aboard your vessel is with a（）.
A. pallet
B. barrel hook
C. spreader
D. snotter
[单项选择]You are approaching a vertical lift bridge.You know the span is fully open when（）.
A. Three white lights in a vertical line are lit
B. A red light starts to flash at about 60 times a minute
C. A yellow light is illuminated on the bridge pier
D. There is a range of green lights under the lift span
[单项选择]When hoisting a boat on gravity type davits using an electric motor driven winch，the davit arms should be brought up（）.
A. to their final position with the winch operating at slow speed
B. to the bar stop，and then hand cranked to their final position
C. until just before they make contact with the limit switch，and then hand cranked to their final position
D. to the embarkation deck，and then hand cranked to their final position
[单项选择]The static suction lift of a pump is the difference in elevation between the （）.
A. centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pump
B. centerline of the pump and the suction liquid level when the source of liquid is above the pump
C. centerline of the pump and the level of the discharge liquid
D. liquid levels of the suction and discharge
[单项选择]— Mike injured his leg playing football yesterday. — Really?（）
A. Who did that?
B. What’s wrong with him?
C. How did that happen?
D. Why was he so careless?
[单项选择]A single heavy wire made up for the topping lift is called a（）.
A. bale
B. spanner wire
C. bull line
D. working guy
[单项选择]Neglecting friction，you desire to lift a 300 kgs weight with a stress on the hauling part of 100 kgs.Which of the following tackles would you use（）.
A. Gun tackle
B. Luff tackle
C. Two-fold tackle
D. Double-luff tackle
