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With a given load on the cargo hook，the thrust on a cargo boom ______.
A.increases as the angle to the horizontal increases
B.increases as the angle to the horizontal decreases
C.is greatest at an angle of 45° and decreases as the boom is raised or lowered
D.is least at an angle of 45° and increases as the boom is raised or lowered
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更多 “ With a given load on the cargo hook，the thrust on a cargo boom ______.A.increases as the angle to the horizontal increasesB.increases as the angle to the horizontal decreasesC.is greatest at an angle of 45° and decreases as the boom is raised or loweredD.is least at an angle of 45° and increases as the boom is raised or lowered ” 相关考题
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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
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You are on a multiple-product tanker and scheduled to load a cargo classed as an aromatic amine．This cargo is incompatible with cargoes classed as ______．A.organic anhydridesB.ketonesC.phenolsD.esters
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When a cargo boom or crane is rated at varying capacities，there will be a table at the controls which relates safe working load to ______．A.winch speedB.boom strengthC.load radiusD.cable strength
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Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom ________．A.Cargo whipB.Gooseneck fittingC.Spider bandD.Topping lift
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Mousing a cargo hook with marline or small line ______.A.increases the lifting capacity of the hookB.protects the hook from the sling ringC.prevents the sling ring from coming out of the hookD.All of the above
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The jumbo boom can （）.A、lift heavy cargoB、load and unloadC、join ropes togetherD、lift light cargo
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大副告诉装卸工人不要用钩子装袋装货。（）A、The chief officer told the stevedores not to use hooks to load the deck cargo.B、The bosun told the stevedores not to use hooks to load the bagged cargo.C、The chief officer told the stevedores not to use hooks to load the bagged cargo.D、The bosun told the stevedores not to use hooks to load the deck cargo.
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单选题If the moisture content of the cargo sample is（）the Transportable Moisture Limit,then the cargo should be safe to load.A
aboveB
belowC
equal toD
uncertain
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单选题杂货船可以用自己的吊杆装卸货物。（）A
General cargo ships may load and discharge by her own winch.B
Bulk carriers may handle cargo by her own derricks.C
General cargo ships may load and discharge by her own derricks.D
General cargo ships may load and discharge by cranes.
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单选题The term "load on top" is used on many crude oil carriers, is to provide a method for （）.A
calculating the ullage in the cargo tanksB
loading ballast by gravityC
the loading of new cargo into the slop tank as a procedure to minimize pollutionD
calculating the ratio of cargo expansion in a cargo tank
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单选题When a cargo boom or crane is rated at varying capacities，there will be a table at the controls which relates safe working load to（）.A
winch speedB
boom strengthC
load radiusD
cable strength
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单选题The tackle that raises and lowers the boom is（）.A
the cargo fallB
The cargo hoisting wire ropeC
the topping liftD
the cargo whip
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单选题For a given weight of cargo，the stress on the heel block of a cargo boom（）.A
increases as the cargo closes the head while hoistingB
increases if the cargo runner is doubled upC
decreases as the boom is topped to a greater angleD
is determined by the thrust stresses on the boom
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单选题大副告诉装卸工人不要用钩子装袋装货。（）A
The chief officer told the stevedores not to use hooks to load the deck cargo.B
The bosun told the stevedores not to use hooks to load the bagged cargo.C
The chief officer told the stevedores not to use hooks to load the bagged cargo.D
The bosun told the stevedores not to use hooks to load the deck cargo.
考题
单选题With a given load on the cargo hook，the thrust on a cargo boom（）.A
increases as the angle to the horizontal increasesB
increases as the angle to the horizontal decreasesC
is greatest at an angle of 45° and decreases as the boom is raised or loweredD
is least at an angle of 45° and increases as the boom is raised or lowered
考题
单选题Mousing a cargo hook with marline or small line（）.A
increases the lifting capacity of the hookB
protects the hook from the sling ringC
prevents the sling ring from coming out of the hookD
All of the above
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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
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单选题A bench hook is used for（）.A
handing of cargo casesB
handing oilskingsC
sewing canvasD
splicing small stuff
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单选题The jumbo boom can （）.A
lift heavy cargoB
load and unloadC
join ropes togetherD
lift light cargo
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单选题In a general cargo crane, （） is fitted to lift the cargo load.A
the slewing motorB
the luffing motorC
the hoisting motorD
none of the above
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单选题The majority of cargo gear breakdowns are a result of（）.A
Guy failuresB
Topping lift failuresC
Bending of the boom from compressionD
Gooseneck failure
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