水手80题解析.docx
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水手80题解析
1.Usually,howmanytypesofship’sropearethereontheship?
A.Twotypes
B.Threetypes
C.Fourtypes
D.FiveTypes
2._______isthestrongestandmostexpensiveofthenaturalfibers.
A.Manilarope
B.Tarredrope
C.Cotton-hemprope
D.Nylonrope
3.Nowadays,Manilaropehaslargelybeenreplacedby_______inmostapplications.
A.Steelwirerope
B.Tarredrope
C.Cotton-hemprope
D.syntheticfiberrope
4.Inthepast,manilaropewasusedwhenevergreatstrengthwasrequired,butitsuseisnowlimitedtogeneralpurposework,suchas_______.
A.lashingtheropeend
B.onlymessengers
C.onlyslingropes
D.messengersandslingropesforworkaloft.
5._______isflexible,light,lessstrongandeasytobecorrosivewhendamped.
A.Manilarope
B.Tarredrope
C.Cotton-hemprope
D.Nylonrope
6._______isonlyusedforwrapping,forexample,lashingropeendofsteelwirebeforesplicing.
A.Manilarope
B.Tarredrope
C.Cotton-hemprope
D.Nylonrope
7._______similartoManilarope,buteasytobecorrosivewhentheoilisdried.
A.Manilarope
B.Tarredrope
C.Cotton-hemprope
D.Nylonrope
8.Itisusedforflaglineandheavinglineandsoon.
A.Manilarope
B.Tarredrope
C.Cotton-hemprope
D.Nylonrope
9._______isbraidedandcorrosive-resistant.Itismorecorrosive-resistantthanManilaropebutlessthansyntheticfiberrope.
A.Manilarope
B.Tarredrope
C.Cotton-hemprope
D.Nylonrope
10.Nowadays,thereisatrendthatthecotton-hempropeisreplacedbythe_______gradually.
A.Steelwirerope
B.Tarredrope
C.Manilarope
D.syntheticfiberrope
11.Syntheticfiberropeismadefromsyntheticfibersor_______.
A.abacafibers
B.plantwhichgrowsinthePhilippineIslandsofthePacific.
C.Manilafibers
D.man-madefibers
12._______havemanyadvantages.Theyarestrongandelasticandtheyareresistanttotheactionofwater.
A.Steelwirerope
B.Tarredrope
C.Manilarope
D.syntheticfiberrope
13._______isthestrongestandthemostelasticofallthesyntheticfibers.
A.Dacron
B.Nylon
C.Polyethylene
D.Polypropylene
14.Nylonisexpensive,costingalmost_______asmuchasManilaofthesamesize.
A.double
B.treble
C.fivetimes
D.tentimes
15.NylonhasseveraladvantagesoverManila,however.Itisalmost_______asstrongandlasts________aslong.
A.threetimes/fivetimes
B.fivetimes/threetimes
C.fivetimes/tentimes
D.tentimes/fivetimes
16.Onboardship,theuseofnylonisauthorizedfor_______.
A.towlines,mooringlines,andcargohoist.
B.towlines,mooringlines,andstaysformasts.
C.towlines,mooringlines,andsignalhalyards.
D.towlines,mooringlines,andstaysforfunnels.
17.Onefeatureofnylonthatcanbeadisadvantageinsomeapplicationsisits_______.
A.elasticity
B.weight
C.length
D.strength
18.Underload,_______willstretchupto40percentofitsoriginallength.
A.thestandardthree-strandnylonline
B.double-braidednylonline
C.plaitednylonlines
D.bothBandC
19._______hasabout80percentofthestrengthofnylonbutwillstretchonlyabout10percentofitsoriginallength.
A.Nylon
B.Dacron
C.Polyethylene
D.Polypropylene
20._______hasthehighestmeltingpoint.
A.Nylon
B.Dacron
C.Polyethylene
D.Polypropylene
21._______hasmanyusesonboardship,particularlyforstandingrigging,mooringlinesandforcargohandling.
A.Steelwirerope
B.naturalfiberrope
C.Cotton-hemprope
D.syntheticfiberrope
22.Thereisawirecoreinthecenterofsuchwirerope,aroundwhich,sixwirestrandsarelaid.Suchwireropeiscalled________.
A.Steelwirerope
B.Stiffwirerope
C.Semi-flexiblewirerope
D.flexiblewirerope
23.Thestiffwireropeisusuallyusedasstaysformastsandfunnels.
A.cargohoist
B.towlines,mooringlines
C.signalhalyards
D.staysformastsandfunnels
24.Thereisanoiledcoreinthecenterofsuchwirerope,aroundwhich,sixwirestrandsarelaid.Suchwireropeiscalled________.
A.Steelwirerope
B.Stiffwirerope
C.Semi-flexiblewirerope
D.flexiblewirerope
25.Becausethesemi-flexiblewireropeismoreflexiblethanthestiffwirerope,itisusuallyusedas_______andsoon.
A.cargohoist
B.towlines,mooringlines
C.signalhalyards
D.staysformastsandfunnels
26.Thereisanoiledcoreinthecenterofsuchwirerope,aroundwhich,sixwirestrandsarelaid.Moreover,therearesixsmalloiledcoresinthecenterofthesixstrands,thatis,onesmalloiledcoreforeachwirestrand.Suchwireropeiscalled________.
A.Steelwirerope
B.Stiffwirerope
C.Semi-flexiblewirerope
D.flexiblewirerope
27.Theflexiblewireropeisthemostflexibleandusuallyusedas_______andsoon.
A.cargohoist
B.heavinglines
C.signalhalyards
D.staysformastsandfunnels
28.Three-strandfiberropeandwireropebelongto_______.
A.laidrope
B.braidedrope
C.crossrope
D.compositerope
29.Braidedropeisnoteasytotwist,butlessstrong.Itisusuallyusedas_______andsoon.
A.stays
B.guys
C.flaglineandheavingline
D.cargohoist
30.Crossropeisusuallyusedas_______.
A.stay
B.guy
C.mooringline
D.cargohoist
31._______isusuallyusedastowinglineonocean-goingtugsbecauseitisbothflexibleandstrong.
A.laidrope
B.braidedrope
C.crossrope
D.compositerope
32._______isthestrengthwhichisusedinpractice.
A.Breakingstrength
B.Testingstrength
C.Safeworkingload
D.HalftheBreakingstrength
33.Afterstoringfor2or3years,thestrengthofthenewropewillreducedby_______;
A.5%
B.10-20%
C.20-30%
D.40%
34.Aftermakingeyesplices,thestrengthofthefiberropewillbereducedby_______.
A.5%
B.10%
C.20%
D.40%
35.Aftermakingshortspliced,thestrengthofthewireropewillbereducedbynearly_______.
A.5%
B.10%
C.10-25%.
D.20-30%
36.Theshackleshouldbederustedandlubricated_______.
A.everymonth
B.everyothermonth
C.everythreemonths
D.everyyear
37.Whenthedistanceofthehookopeningisover_______oftheoriginaldistanceorthereisacrackonthesurfaceofthehook,suchhookshouldbereplaced.
A.5%
B.10%
C.15%.
D.20%
38.Thedistanceofthetwothimblesshouldbelessthanorequalto_______timesdiameterofthewirerope.
A.five
B.six
C.ten
D.twenty
39.Whilepickinguptheloaddiagonallyorhorizontally,thetipofthehookshouldbe_______.
A.downward
B.upward
C.lateral
D.vertical
40.Ifyouwanttoconnectthetworopeswithdifferentdiameters,whichknotwillyouuse?
___________.
A.reefknot
B.slipperyreefknot
C.sheetbend
D.halfhitch
41.Thesteelwireropewiththestandardof“7×19”shouldbe_________.
A.stiffwirerope
B.semi-flexiblewirerope
C.flexiblewirerope
D.compositerope
42.Whenlubricatingthetoppingliftblock,theregularintervalsshouldbe_________.
A.onceamonth
B.everythreemonths
C.everysixmonths
D.everyyear
43.WhenlubricatingtheCargorunners,theregularintervalsshouldbe_________.
A.onceamonth
B.everyvoyageoreverythreemonths
C.everysixmonths
D.everyyear
44.Thebearingofcargoblockandleadblockshouldbegreasedeverythreemonths.
A.onceamonth
B.everythreemonths
C.everysixmonths
D.everyyear
45.Whenworkingataheightof__________metersorabove,youshouldfollowthesafetyworkingprocedure.
A.2
B.5
C.10
D.20
46.Theorderofwashingthedeckshouldbe___________.
A.fromwindwardtoleeward;fromhighplacetolowerplace;fromoutboardto
inboard
B.fromleewardtowindward;fromhighplacetolowerplace;fromoutboardto
inboard
C.fromwindwardtoleeward;fromhighplacetolowerplace;frominboardto
outboard
D.fromleewardtowindward;fromhighplacetolowerplace;frominboardto
outboard
47.Whenleadingtheropeintothe“Four-fivepurchase”,thestandingpartoftheropeshouldbefixedon_________.
A.theheadoffour-wheelblock
B.theendofthefour-wheelblock
C.theheadoffive-wheelblock
D.theendofthefive-wheelblock
48.Whenthewheelnumbersofthetwoblocksaresame,thestandingpartshouldbe
fixedon_________.
A.theendofthefixedblock
B.theendofthemoveableblock
C.theheadofthefixedblock
D.theheadofthemoveableblock
49.Theorderofpaintingshouldbe____________.
A.fromtoptobottom;fromdifficultplacetoeasyplace;frominsidetooutside
B.fromtoptobottom;fromeasyplacetodifficultplace;frominsidetooutside
C.fromtoptobottom;fromdifficultplacetoeasyplace;fromoutsidetoinside
D.fromtoptobottom;fromeasyplacetodifficultplace;fromoutsidetoinside
50.Theknotcanbeusedasthesafetyharnessis__________.
A.sheetbend
B.bowling
C.doublesheetbend
D.loweringhitch
51.Amongseveralkindsofheavingpostures,theonethatthedistanceisfurtherbut
thedirectionismaybedifficulttocontrolis______________.
A.wharftype
B.vesseltype
C.rotatingtype
D.swingingtype
52.Whensecuringtheropeendwhichisunderstrainonthecylinder,youshould
use___________.
A.clovehitch
B.carrying-polehitch
C.timberhitch
D.roundturnandtwohalfhitches
53.Whenmakingastopperknotonamooringline,theoperatingdirectionshouldbe___________.
A.withthedirectionofthemooringlinewhichissentout
B.againstthedirectionofthemooringlinewhichissentout
C.towardship’shead
D.towardship’sstern
54.Whenthenumberofthebrokenwiresofthesteelwirerop
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