更多"You are operating a lift boat.When "的相关试题:
[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]Before using or operating any equipment, you should first （） its manual thoroughly and understand its contents（）.
A. read/sufficient
B. consult/sufficiently
C. read/sufficiently
D. consult/sufficient
[单项选择]If you were operating a centrifugal water service pump with worn wearing rings, the （）.
A. pump would be very noisy
B. pump would vibrate excessively
C. pump would develop insufficient flow
D. stuffing box would leak excessively
[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
[单项选择]Linda, can you give me a lift after work? （）
A. It‘s very kind of you to do so.
B. Thank you for your offer.
C. Never mind. I‘ll go shopping.
D. No problem. We go the same direction
[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]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]当选择LIFT-DUMP位时（）
A. 襟翼放出到75度，减速板放出超过正常位置
B. 襟翼保持在45度，减速板放出超过正常位置，
C. 襟翼和减速板都放出到75度
D. 以上全不正确
[单项选择]An electrically driven automatically operating auxiliary blower is provided for slow speed and （） of a low speed diesel engine.
A. manoeuvring operations
B. bad combustion
C. cooling
D. mooring trial
[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]A flooded leg on a lift boat 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]Stress on the topping lift of a swinging boom can be reduced by（）.
A. rigging a back stay
B. raising the boom
C. increasing the mechanical advantage of the cargo purchase
D. taking all slack out of the preventer
[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]A single heavy wire made up for the topping lift is called a（）.
A. Bale
B. Spanner wire
C. Bull line
D. Working guy
