单选题What is meant by spotting the boom?（）ALowering it into a cradleBPlacing it in a desired positionCSpotting it with wash primer and red leadDTwo-blocking it
单选题
What is meant by spotting the boom?（）
A
Lowering it into a cradle
B
Placing it in a desired position
C
Spotting it with wash primer and red lead
D
Two-blocking it
参考解析
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The boom stops are installed on an offshore crane to ______.A.prevent the boom from being raised too highB.prevent the boom from swingingC.support the boom when not in useD.prevent the boom from being lowered
What does “evel-luffing” accomplish during crane operations ________．A.It prevents the load from swinging when the boom level is adjustedB.Less power is needed when topping the boom with a load on the hookC.It maintains the height of the load above the deckD.All of the above
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What is/are the advantage（s）of cranes over conventional cargo booms ________．A.Cranes are able to pick up and drop loads over a greater spotting areaB.Increased safety because the deck is clear of running and standing riggingC.Simplicity of operation of the crane by its operatorD.All of the above
ASP（音频控制面板）的正常位置是（）A、MASK／BOOM开关在BOOM位；ALT／NORM开关在NORM位B、MASK／BOOM开关在MASK位；ALT／NORM开关在NORM位C、MASK／BOOM开关在MASK位；ALT／NORM开关在ALT位D、MASK／BOOM开关在BOOM位；ALT／NORM开关在ALT位
单选题What is meant by the term TOPPING THE BOOM?（）ALowering the boomBRaising the boomCSpotting the boom over the deckDSwinging the boom athwartships
单选题On your vessel，a wire rope for the cargo gear shows signs of excessive wear and must be replaced. In ordering a new wire for this 10-ton boom，what safety factor should you use?（）AThreeBFiveCSixDSeven
单选题What is meant by the term“luffing the boom”of a crane（）．AStopping the boomBTopping or lowering the boomCMoving the boom left or rightDAll of the above
单选题What is meant by the term “broaching to”? （）AHaving the vessel head toward the seaBRunning before a seaCBeing turned broadside to the seaDHaving the vessel filled with water
单选题The boom stops are installed on an offshore crane to（）.Aprevent the boom from being raised too highBprevent the boom from swingingCsupport the boom when not in useDprevent the boom from being lowered
单选题The boom indicator tells the operator at what angle the boom is compared to the（）.Ahorizontal position of the boomBvertical position of the boomChorizontal position of the load being liftedDvertical position of the load being lifted
单选题With a given load on the cargo hook，tension in a single span topping lift（）.Aincreases as the boom's angle to the horizontal increasesBis at a maximum when the boom is at a 45° angle to the horizontalCincreases as the boom's angle to the horizontal decreasesDdecreases as the boom's angle to the horizontal decreases
单选题What is meant by veering the anchor chain? （）ABringing the anchor to short stayBHeaving in all the chainCLocking the windlass to prevent more chain from running outDPaying out more chain
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单选题What will NOT decrease the stability of a vessel?（）ATopside icingBRunning with a following seaCUsing 35% of the fuel in a full tankDLowering a weight suspended by a boom onto the deck
单选题Captain said that very clearly so that nobody was in any（）about what was meant.AdoubtBquestionCwonderDconsideration
单选题Captain said that very clearly so that nobody was in any（）about what was meant?AdoubtBquestionCwonderDconsideration
单选题What does “evel-luffing” accomplish during crane operations（）.AIt prevents the load from swinging when the boom level is adjustedBLess power is needed when topping the boom with a load on the hookCIt maintains the height of the load above the deckDAll of the above
单选题0n a crane ,the boom indicator tells the operator what angle the boom angle is compared to the（）.Avertical positionBhorizontal positionCboom stop angleDminimum radius angle
单选题What is/are the advantage（s）of cranes over conventional cargo booms（）.ACranes are able to pick up and drop loads over a greater spotting areaBIncreased safety because the deck is clear of running and standing riggingCSimplicity of operation of the crane by its operatorDAll of the above