Topping wires fix the height of the derricks and （） to the deck may be used to prevent fore and aft movement.

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• （） may be fitted for operating the derrick topping lift (the wire which adjusts the derrick height).

  A . A capstan B . A hold C . A warp end D . A mooring drum

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• A band or collar on the top end of a boom to which the topping lift，midships guy，and outboard guys are secured，is called the（）.

  A . collar band B . guy band C . pad eye collar D . spider band

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• The resistance of electric wire will decrease as its （）

  A . length increases B . cross-sectional area increases C . temperature increases D . percent of metallic purities increase

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• A single heavy wire made up for the topping lift is called a（）.

  A . Bale B . Spanner wire C . Bull line D . Working guy

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• The coil of wire rotating in the magnetic field produces the（）.

  A . voltage B . current C . power D . frequency

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• When the current flow through a copper wire increases, its （）

  A . resistance will decrease B . insulation will bum C . temperature will increase D . conductivity will increase

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• A tackle by which the outer end of a boom is raised and lowered is the topping（）.

  A . boom B . lift C . raise D . tackle

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• Wires should have each feature of the following except （）

  A . flame retardant B . moisture resistant C . oil resistant D . low conductivity

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• A warp end may be fitted for operating the derrick topping wire which adjusts the derrick （）.

  A . length B . slack C . height D . rotation directio

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• The major cause of anchor buoy pendant wire failures is（）.

  A . corrosion B . rough weather C . defective sockets D . mishandling

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• A band or collar on the top end of a boom which the topping lift, midships guy, and outboard guys are secured, is called the（）.

  A . collar band B . guy band C . pad eye collar D . spider band

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• 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

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• What is an advantage of having wire rope with a fiber core over that of a wire rope of the same size with a wire core（）.

  A . Fiber core rope offers greater strength B . Fiber core rope offers greater flexibility C . Fiber core rope can be used at higher operating temperatures D . Fiber core rope is the only type authorized for cargo runner

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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 increases B . is at a maximum when the boom is at a 45° angle to the horizontal C . increases as the boom's angle to the horizontal decreases D . decreases as the boom's angle to the horizontal decrease

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• The only wire rope termination which may be made in the field is（）.

  A . swaged socket B . thimbled mechanical splice C . hand splice D . spelter poured and resin socket

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• On open lifeboats，the purpose of the wire stretched between the davit heads is to（）.

  A . keep the movement of the davits at the same speed B . keep the davits from slipping when they are in the stowed position C . prevent vibration during lowering of the boat D . support the manrope

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• What is meant by the term TOPPING THE BOOM?（）

  A . Lowering the boom B . Raising the boom C . Spotting the boom over the deck D . Swinging the boom athwartshi

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• The （） is used to handle the ropes and wires.

  A . steering gear B . windlass C . deck crane D . warping drum

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• During fueling operations, which of the listed precautions should be taken when topping off fuel tanks?（）

  A . Reduce the pumping rate by closing the deck filling valve B . Close all overflow valves C . Place 5 gallon containers under all flange connections in the fuel line D . Reduce the pumping rate and sound tanks frequently as the level rise

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• When cutting wire rope，seizings are put on each side of the cut.The seizings prevent the wire from unlaying and also（）.

  A . Maintain the original balance of the tension in the wires and strands B . Prevent moisture from entering between the wires at the cut end C . Forces lubricant from the core to protect the raw，cut end D . All of the above

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• The wire frame diagram is used to show wire __________.

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• The wires fixed under Belle\'s cap were connected to

  A．A plastic box next door. B．A computer at Ca mbridge University. C．A box of electronics in the booth. D．A box which, in turn, was linked to two computers.

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• The explanation of the word "wired" probably indicates that______.

  A．people always misunderstand the functions of the Internet B．Internet is partly responsible for the vanishing of paper books C．people call the Internet "wired world" for a reason D．Internet will take over the functions of paper books

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