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The jumbo boom can （）.
- A、lift heavy cargo
- B、load and unload
- C、join ropes together
- D、lift light cargo
参考答案
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单选题The （）(笨重货) must be handled by jumbo boom or shore crane.A
awkward cargoB
drummed cargoC
cased cargoD
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单选题The jumbo boom can lift heavy cargo, the gantry crane can hoist containers.（）A
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单选题What is meant by the term TOPPING THE BOOM?（）A
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Raising the boomC
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单选题Stress on the topping lift of a swinging boom can be reduced by（）.A
rigging a back stayB
raising the boomC
increasing the mechanical advantage of the cargo purchaseD
taking all slack out of the preventer
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operated by one winchmanB
cradled on deckC
swung from one hatch to the adjacent hatchD
collared to the mast
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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
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double sized mattress consists of more than 890 coilsB
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bridle arrangement having a long beam of the length of the container
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单选题What is required for proper implementation of jumbo frame support on a Cisco Nexus 2000 Series Fabric Extender？（）A
The interface configured as FEX fabric requires the MTU to be set to jumbo.B
The service policy must be applied to the system QoS.C
The device defaults to jumbo frame support； no changes are required.D
The switchport in the FEX interface must be set to MTU 9216.
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单选题我们每航次拆卸一次吊杆。（）A
We dismantle the jumbo boom twice a voyage.B
We dismantle the derricks once a voyage.C
We examine the derricks once a voyage.D
We dismantle the heavy derricks once a voyage.
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
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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The boom indicator on a crane will indicate the（）.A
length of the boomB
angle of the boomC
lifting capacity of the boomD
direction of the boom
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