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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
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On a crane, the boom indicator tells the operator what angle the boom angle is compared to the ______.A.vertical positionB.horizontal positionC.boom stop angleD.minimum radius angle
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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
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单选题What is meant by the term TOPPING THE BOOM?（）A
Lowering the boomB
Raising the boomC
Spotting the boom over the deckD
Swinging the boom athwartships
考题
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?（）A
ThreeB
FiveC
SixD
Seven
考题
单选题What is meant by the term“luffing the boom”of a crane（）．A
Stopping the boomB
Topping or lowering the boomC
Moving the boom left or rightD
All of the above
考题
单选题What is meant by the term “broaching to”? （）A
Having the vessel head toward the seaB
Running before a seaC
Being turned broadside to the seaD
Having the vessel filled with water
考题
单选题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
考题
单选题The boom indicator tells the operator at what angle the boom is compared to the（）.A
horizontal position of the boomB
vertical position of the boomC
horizontal position of the load being liftedD
vertical position of the load being lifted
考题
单选题With a given load on the cargo hook，tension in a single span topping lift（）.A
increases as the boom's angle to the horizontal increasesB
is at a maximum when the boom is at a 45° angle to the horizontalC
increases as the boom's angle to the horizontal decreasesD
decreases as the boom's angle to the horizontal decreases
考题
单选题What is meant by veering the anchor chain? （）A
Bringing the anchor to short stayB
Heaving in all the chainC
Locking the windlass to prevent more chain from running outD
Paying out more chain
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单选题What is NOT an advantage of the house-fall system when compared to a married-fall system using two of the ship’s booms? （）A
There is a steady spotting area under the dockside blockB
Loading can be accomplished from a narrow apron without endangering the inboard boomC
The system can be used for working the second deck of a warehouseD
There is more accurate control of cargo drafts required to be stowed in the wings
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单选题What will NOT decrease the stability of a vessel?（）A
Topside icingB
Running with a following seaC
Using 35% of the fuel in a full tankD
Lowering a weight suspended by a boom onto the deck
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单选题Captain said that very clearly so that nobody was in any（）about what was meant.A
doubtB
questionC
wonderD
consideration
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单选题Captain said that very clearly so that nobody was in any（）about what was meant?A
doubtB
questionC
wonderD
consideration
考题
单选题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
考题
单选题0n a crane ,the boom indicator tells the operator what angle the boom angle is compared to the（）.A
vertical positionB
horizontal positionC
boom stop angleD
minimum radius angle
考题
单选题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
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