技能認(rèn)證船舶英語考試(習(xí)題卷4)

試卷科目：技能認(rèn)證船舶英語考試技能認(rèn)證船舶英語考試(習(xí)題卷4)PAGE"pagenumber"pagenumber/SECTIONPAGES"numberofpages"numberofpages技能認(rèn)證船舶英語考試第1部分：單項選擇題，共30題，每題只有一個正確答案,多選或少選均不得分。[單選題]1.Thefunctionofarefrigerationplantistoactasa______sothatroomscanbemaintainedatlowtemperaturesforthepreservationoffoodstuffs.A)heatB)wetC)hydraulicD)rotary答案:A解析:[單選題]2.TheGPSsystemwasdesignedfor______satellites.A)3.0B)12.0C)18.0D)24.0答案:D解析:[單選題]3.Allecho-sounderscanmeasurethe______.A)actualB)actualC)averageD)average答案:B解析:[單選題]4.Theprimaryfunctionofanelectricmotoristo_____.A)developB)generateC)produceD)generate答案:A解析:[單選題]5.Theabbreviationof?PF?intheelectrotechnicsfieldequivalentsto______.A)powerB)powerC)performanceD)pulse答案:B解析:[單選題]6.Intheelectricpropulsionsystem,wemustuseanelectricdrivingmotorof______.A)constantB)controllableC)stabilizedD)steady答案:B解析:[單選題]7.Theemergencygeneratororemergencybatteryisconnectedto_____onmostlargeships.A)distributionB)sectionC)emergencyD)main答案:C解析:[單選題]8.Themaingeneratorsareconnectedto_____.A)distributionB)sectionC)emergencyD)main答案:D解析:[單選題]9.Anotherwordforsoftwareis______.A)hardwareB)programC)programmingD)an答案:B解析:[單選題]10.TheIntegratedBridgeSystemisusedto______.A)maintainB)monitorC)planD)display答案:A解析:[單選題]11.IftheETOmeasuredtheinsulationresistancefrequently,thismotor______burnout.A)willB)didC)wouldD)do答案:C解析:[單選題]12.Thewheelhouseissituatedin______.A)bridgeB)captainC)boatD)accommodation答案:A解析:[單選題]13.Inmorerecentyears,______hasbeenusedbyciviliansinmanynewwaystodeterminepositions,suchasinautomobileandboatnavigation,hiking,emergencyrescue,andprecisionagricultureandmining.A)GPSB)GMDSSC)AISD)Navtex答案:A解析:【注】GPS：全球定位系統(tǒng)；GMDSS：全球海上遇險安全系統(tǒng)；Navtex：航警電傳[單選題]14.Theship?slogisthenavigationequipmenttomeasuresailingspeedandaccumulatevoyage.Thetraditionaltypesdon?tinclude______.A)theB)theC)theD)the答案:D解析:[單選題]15.TheconstituentpartsofAUTOCHIEF-IVmainengineremotecontrolsystemdon?tinclude______.A)digitalB)AC-4C)AC-4D)hydraulic答案:D解析:[單選題]16.Whatdoesthispictureshow?A)AB)AC)AnD)A答案:A解析:[單選題]17.Thetwobasictypesofcomputersoftwareare______and______.A)program,B)productivity,C)applications,D)systems,答案:C解析:[單選題]18.TheDGS8800edigitalgoverningsystemusedinAC-4mainenginecontrolsystemis______.A)aB)aC)onlyD)a答案:A解析:[單選題]19.WhenTRON-30SS-EPIRBis____,theauto-transmittingwillstart.A)putB)switchC)storedD)mounted答案:A解析:【注】TRON-30S型號的S-EPIRB垂直放入水中時開始自動發(fā)射報警。[單選題]20.Radarmakesitpossibleandmuchsaferforustosail______.A)inB)inC)inD)in答案:A解析:【注】boisterous：兇猛的，粗魯?shù)腫單選題]21.Whichofthefollowingdoesnotbelongtodeckmachines?A)OilB)CargoC)Windlass.D)Hatch答案:A解析:[單選題]22.Theoperatingsystemsofapersonalcomputerdon?tinclude______.A)MicrosoftB)DOSC)MicrosoftD)UNIX答案:A解析:[單選題]23.Whenthereisaflamefailureinanautomaticallyfiredauxiliaryboiler,the______.A)airB)fuelC)waterD)safety答案:B解析:[單選題]24.Whichofthefollowingstatementsisright?A)TheB)TheC)TheD)The答案:D解析:【注】當(dāng)SART與EPIRB組合在一起時可以工作在自浮位置。[單選題]25.TWOSTEPCONTROLERACTIONismainly________.A)proportionalB)integralC)derivativeD)on-off答案:D解析:【注】twostepcontroller：雙級控制器；proportionalcontrol：比例控制；integralcontrol：積分控制；derivativecontrol：微分控制；on-offcontrol：開關(guān)控制，通斷控制，雙位控制[單選題]26.Aprocessofcomparingtheactualperformanceofamachinewiththeintendedperformance,andthenadjustingthemachinetoreduceandeventuallyeliminatethedifferencebetweentheactualandintendedperformanceiscalled______.A)openB)feedbackC)combiningD)integral答案:B解析:【注】actualperformance：實際性能；intendedperformance：預(yù)期性能[單選題]27.Thevoyagedatarecorder(VDR)cansavetheship?spositions,trends,ordersandmaneuveringinarestorablemode.ItsconstituentpartsdoNOTincludethe______.A)dataB)protectiveC)interfaceD)data答案:D解析:[單選題]28.Iftheresistanceofacircuitiscutinhalfandtheappliedvoltageiskeptconstant,thecurrentflowwillbe_____.A)doubledB)quadrupledC)unchangedD)cut答案:A解析:【注】quadruple：四倍。根據(jù)歐姆定律公式I=U/R，可以導(dǎo)出R=U/I（I：電流；U：電壓；R：電阻）。[單選題]29.______willformthebasisfordistressalertingandsafetycalling.A)GMDSSB)EGC)D)MSIE)DS答案:D解析:【注】DSC將構(gòu)成遇險報警和安全呼叫的基礎(chǔ)。[單選題]30.TheAutoChiefC20ACPisthemainoperatorcontrolpanel,normallysituated______.A)onB)inC)bothD)andE)F)eitherG)or答案:C解析:第2部分：判斷題，共70題，請判斷題目是否正確。[判斷題]31.Thedraughtatwhichashipfloatsissimplythedistancefromthebottomoftheshiptothewaterline.船舶浮在水面時的吃水,可簡單地看成為船底到水線的距離。A)正確B)錯誤答案:對解析:[判斷題]32.Ithasalreadybeenstatedwhendealingwithbuoyancyandstabilityproblemsthattheforcesgeneratedbythesepressureshaveaverticalresultantwhichisexactlyequaltothegravitationalforceactingonthemassoftheship,i.e.,isequaltotheweightoftheship.早已經(jīng)說過,在處理浮力和穩(wěn)性問題時,這些壓力產(chǎn)生的力有一個垂向合力,它與作用在船舶質(zhì)量的重力剛好相等,也即等于船舶的重量。A)正確B)錯誤答案:對解析:[判斷題]33.Inthefirstplacethedimensionsbywhichthesizeofashipismeasuredwillbeconsidered;theyarereferredtoas?principaldimensions?.首先考慮衡量船舶大小的尺度,稱它們?yōu)?主尺度?。A)正確B)錯誤答案:對解析:[判斷題]34.Oiltightortankbulkheadsarewatertightintheirconstructionbutaresubjectedtomorerigoroustestingthanasimplywatertightbulkhead.油密艙壁或液艙艙壁在結(jié)構(gòu)上是水密的,但它們比僅要求水密的艙壁要經(jīng)受更為嚴(yán)格的試驗。A)正確B)錯誤答案:對解析:[判斷題]35.Itiscalledamidshipsormidshipsandthesectionoftheshipbythisplaneisthemidshipsection.它稱為船舯。船體在這個位置的橫剖面稱為中橫剖面。A)正確B)錯誤答案:對解析:[判斷題]36.Thestudyofshipinteractionwillsurfacewaveshasseenintenseeffortbyhydrodynamicists,sinceitisadifficultfieldinwhichtoextractmeaningfulresultsfromtheorywhilebeingonewherethebenefitsofsolutionsaregreat.在這個領(lǐng)域里,通過理論得出有意義的結(jié)論非常困難,但是可以帶來巨大收益,因此,船舶水動力學(xué)家針對船與表面波之間的相互作用進(jìn)行了大量研究。A)正確B)錯誤答案:對解析:[判斷題]37.Thecoupleformedbytheforcesofbuoyancyandgravityintheabovediscussionis,quantitatively,theproductoftheweightoftheshipandthedistancebetweenthetwoforces.Theperpendiculardistancebetweenthelinesofactionofthetwoforcesiscommonlycalledtherightingarm(GZ).Whentheweightordisplacementoftheshipisconstant,wecanusethevalueofGZasameasureofthestaticstabilitythroughallangelsofinclination.上面討論的力偶由浮力和重力形成,大小等于船舶重量與兩個力之間距離的乘積。兩個力的作用線間的垂直距離通常稱為扶正力臂(GZ)。當(dāng)船舶重量或排水量不變時,我們可以通過GZ值來估計船舶在任意傾斜角的靜穩(wěn)性。A)正確B)錯誤答案:對解析:[判斷題]38.Itwasconsideredthatthesafetyofpassengershipswasasubjectforstudyonaninternationalbasis,sothataftertheTitanicdisasteraninternationalconferencewasheldin1914.人們普遍認(rèn)為客船安全性是一個國際性的研究課題,所以泰坦尼克號失事后,1914年召開了一次國際會議。A)正確B)錯誤答案:對解析:[判斷題]39.Themostsignificantclassofdisplacementhullforspecialapplicationisthesubmarine,avesselforcompletelysubmergedoperation.排水型船中,最重要的一種特殊功用船型是潛水艇,它是一種可以完全沒入水中航行的船。A)正確B)錯誤答案:對解析:[判斷題]40.Thepreviouslydiscussedcargoshipsaredesignedfortheminimum(oratleastcompetitive)?requiredfreightrate?,whichinvolvespredictingthe?lifecyclecost?oftheship,includingtheacquisitioncosts,theoperatingandmaintenancecosts,andanysalvagevalueremainingwhentheshipissold.先前討論的貨船就是為最低(或至少有競爭性的)?必要運(yùn)費(fèi)率?而設(shè)計的,這涉及到預(yù)估船舶的服役周期成本,包括購置成本,運(yùn)維成本,及船舶出售時的殘值。A)正確B)錯誤答案:對解析:[判斷題]41.Icebreakers破冰船A)正確B)錯誤答案:對解析:[判斷題]42.Inaddition,ashipthatmustmaneuverwellwhilebackingisoftenfittedwithapairof"flankingrudders"foreachpropeller.Thesearepositionedforwardofthepropeller,oneoneachsideoftheshaft.另外,通常對倒車性能良好的船,每個螺旋槳都配有一對?側(cè)翼舵?。這些側(cè)翼舵安裝在螺旋槳的前面位置,軸的兩側(cè)各一個。A)正確B)錯誤答案:對解析:[判斷題]43.Smaller,lesscomplexvesselsmaynotrequireeveryplanlistedforadequatedefinition,butthelistdoesprovideanindicationofthelevelofdetailconsideredincontractdesign.小型簡單船可能不需要所列出的每個計劃來充分定義,但是該列表的確指出了合同設(shè)計中應(yīng)考慮到的細(xì)節(jié)程度。A)正確B)錯誤答案:對解析:[判斷題]44.Highspeedcraft-hovercraft,multi-hullships,hydrofoilcraft高速船:氣墊船、多體船、水翼艇A)正確B)錯誤答案:對解析:[判斷題]45.Thefinalstageofshipdesignisthedevelopmentofdetailedworkingplans.船舶設(shè)計的最終階段是給出詳細(xì)的施工圖。A)正確B)錯誤答案:對解析:[判斷題]46.Theinteractionsthatgoverntheresistanceofthehullofsteadyforwardmotion-aresistancethatdeterminesthechoiceofpropulsivepower-usuallydemandthegreatestattentionfromthenavalarchitect.這種作用決定了勻速向前運(yùn)動的船體阻力。該阻力又決定了推進(jìn)動力的選擇,所以通常是造船師最需要優(yōu)先關(guān)注的。A)正確B)錯誤答案:對解析:[判斷題]47.Theveryfirsteffort,conceptdesign,translatesthemissionrequirementsintonavalarchitecturalandengineeringcharacteristics.第一步,概念設(shè)計是將目標(biāo)需求轉(zhuǎn)換成造船工程特征參數(shù)。A)正確B)錯誤答案:對解析:[判斷題]48.Modeltestingconsistsoftowingapreciselymademodelofthehullatapreciselycontrolledspeed,incalmwater,whilemeasuringtheforcerequiredtotowit.模型試驗指的是在靜水中以嚴(yán)格控制的速度來拖曳一個精確制造的船體模型,然后測量拖曳力。A)正確B)錯誤答案:對解析:[判斷題]49.Duetothecomplexityassociatedwithoperatinginamarineenvironment,navalarchitectureisaco-operativeeffortbetweengroupsoftechnicallyskilledindividualswhoarespecialistsinparticularfields,oftencoordinatedbyaleadnavalarchitect.鑒于船舶在海洋環(huán)境中航行的復(fù)雜性,造船工程是由具備特定領(lǐng)域?qū)ｉL的技術(shù)人員組成的各小組通力合作并由一位總造船師統(tǒng)籌協(xié)調(diào)完成的。A)正確B)錯誤答案:對解析:[判斷題]50.Itisconvenientifthewaterplanesandthetransverseplanesareequallyspacedanddatumpointsareneededtostartfrom.若各水線面和橫剖面的間距相等,且設(shè)置基準(zhǔn)點(diǎn)作為起始,將是非常方便的。A)正確B)錯誤答案:對解析:[判斷題]51.Now,whentheshipisheeledbyanexternalincliningforceandthecenterofbuoyancyhasbeenmovedfromthecenterlineplaneoftheship,therewillusuallybeaseparationbetweenthelinesofactionoftheforceofgravityandtheforceofbuoyancy.當(dāng)船舶受到外力作用發(fā)生傾側(cè)、浮心偏離船舶中線面時,重力與浮力作用線將發(fā)生分離。A)正確B)錯誤答案:對解析:[判斷題]52.Reliabilityundercombatconditions,theappearanceofmilitarypower,crewhabitabilitythatinfluencesreenlistment,andthepoliticalimportanceofwhobecomestheprimecontractorandprincipalweaponssystemsubcontractors:allthesearefactorsthatmustbetakenintoconsideration,makingtheconstructionandoperationofwarshipsveryexpensivefortaxpayers.戰(zhàn)斗狀態(tài)時的可靠性、武裝性能、影響服役期限的人員可居性,及誰能成為艦艇第一承包商和武備系統(tǒng)分包商的政治因素:所有這些因素都應(yīng)該考慮,這就使得艦艇的建造和運(yùn)營代價對于納稅人來說非常昂貴。A)正確B)錯誤答案:對解析:[判斷題]53.TheSafetyConventionwasnotonlyconcernedwiththewatertightsubdivisionofpassengershipsandtheassociatedproblemofsafetyinthedamagedcondition,butalsolaiddownregulationsgoverningotheraspectsofsafety,suchasfiredetectionandextinguishingandfireprotection,machineryandelectricalinstallation,lifesavingappliancessuchasboatsandthemeansforlaunchingthem,radiotelegraphyandradiotelephony,safetyofnavigation,carriageofgrainanddangerouscargoesandregulationsrelativetonuclearships.安全公約不僅涉及客船水密分艙和破損時的相關(guān)安全問題,也包括涉及其他方面安全的規(guī)范,例如,探火、滅火和防火,機(jī)電裝置,救生設(shè)備如小艇和投放手段,無線電報和無線電話,航行安全,谷物及危險貨物運(yùn)輸,以及核動力船相關(guān)等規(guī)范。A)正確B)錯誤答案:對解析:[判斷題]54.AlargevalueoftheverticalprismaticcoefficientwillindicatebodysectionsofU-formwhilstasmallvalueofthiscoefficientwillbeassociatedwithV-shapedsections.較大的垂向棱形系數(shù)表示其橫截面呈U形,而較小的垂向棱形系數(shù)與V形截面有關(guān)。A)正確B)錯誤答案:對解析:[判斷題]55.Forwardvelocityisthereforeconfinedtoarelativelynarrowlayeradjacenttothehull.Thislayeriscalledthe?boundarylayer?.Thewidthofthelayeriscomparativelysmallatthebowoftheshipbutthickensingoingaft,aswillbeseenfromFigure8.1,whichshowsthefalloffinvelocityatvariouspositionsinthelength.因此前進(jìn)速度僅限于船體附近相對很窄的一層,稱作?邊界層?。其寬度在船首相比較小,但往后會加厚,如圖8.1所示。同時可以看到在船長各位置的速降。A)正確B)錯誤答案:對解析:[判斷題]56.Ontheotherhand,itissaidtobeunstableifacoursedeviationbeginsorcontinuesevenintheabsenceofanexternalcause.另一方面,如果沒有外力的情況下,船舶仍出現(xiàn)航向偏離或繼續(xù)偏離,則稱航向不穩(wěn)定。A)正確B)錯誤答案:對解析:[判斷題]57.Thesethreecasesillustratetheforcesandrelativepositionoftheirlinesofactioninthethreefundamentalstatesofequilibrium.以上三種情況闡明了平衡的三種基本狀態(tài)下力及其所在直線的相對位置關(guān)系。A)正確B)錯誤答案:對解析:[判斷題]58.Areferenceplaneisneededaboutmidlengthoftheshipand,notunnaturally,thetransverseplanemidwaybetweentheperpendicularsischosen.還需要一個關(guān)于船長中點(diǎn)的參考面,自然地,就選取為垂線間長中點(diǎn)處的橫剖面。A)正確B)錯誤答案:對解析:[判斷題]59.Legislationregardingthesafetyofshipsistheresponsibilityofthegovernmentofthecountryconcernedwithregisteringtheship.船舶登記國政府負(fù)責(zé)起草關(guān)于船舶安全的立法。A)正確B)錯誤答案:對解析:[判斷題]60.Thesheercanvaryalongthelengthoftheshipandisusuallygreatestattheends.舷弧沿船長變化。一般在船首、船尾達(dá)到最大值。A)正確B)錯誤答案:對解析:[判斷題]61.Theinfluenceofblockcoefficientontheshapeofthehullformisthatinshipswithhighvalueofthiscoefficientconsiderableparallelmiddleislikelytobefoundandtheslopesofthewaterlinesattheendsaresteep,whereaswithlowblockcoefficientsparallelmiddleisoftenquiteshortormaynotexistatallandtheslopesofthewaterlinesattheendswillbesmallalso.方形系數(shù)對船體形狀的影響是:方形系數(shù)高的船舶具有相當(dāng)長的平行舯體,且水線的兩端傾斜較大,而方形系數(shù)低的船舶平行舯體一般較短,或者根本沒有平行舯體,而且水線兩端的傾斜也小。A)正確B)錯誤答案:對解析:[判斷題]62.Structuresinvolvesselectionofmaterialofconstruction,structuralanalysisofglobalandlocalstrengthofthevessel,vibrationofthestructuralcomponentsandstructuralresponsesofthevesselduringmotionsinseaway.船舶結(jié)構(gòu)包括建造材料的選擇、船舶結(jié)構(gòu)的整體和局部強(qiáng)度分析、船舶在航行運(yùn)動時的結(jié)構(gòu)部件振動和結(jié)構(gòu)動力響應(yīng)。A)正確B)錯誤答案:對解析:[判斷題]63.Socalled'standard'sheerwasgivenbytheformulae:所謂的?標(biāo)準(zhǔn)?舷弧由下面公式給處:A)正確B)錯誤答案:對解析:[判斷題]64.Notethattheseareallanglesandnotrates,whichareconsideredinlaterchapters.注意這些都是角度而不是比率,將在后面章節(jié)中討論。A)正確B)錯誤答案:對解析:[判斷題]65.SomeofthesesocietiesareBureauVeritas(France),DetNorskeVeritas(Norway),AmericanBureauofShipping(USA),GermanischerLloyd(Germany),RegistroItalianoNavale(Italy),andNipponKaijiKyokai(Japan).其中包括是BV(法國),DNV(挪威),ABS(美國),GL(德國),RIN(意大利),和NKK(日本)。A)正確B)錯誤答案:對解析:[判斷題]66.In1968thefirstshipover300,000tonswasbuilt.Withtheirbulkandenormouscapacity(fourfootballfieldscanbeplacedendtoendononeoftheirdecks),theseshipsaredesignedandbuilttobeprofitmakers,enormouslylong,wide,anddeep,carryingthousandsoftonsofcrudeoilpervoyageattheleastcost.1968年,第一艘超過30萬噸的船舶建成。為了盈利,體積龐大、容量巨大(甲板可容納四個首尾相接的足球場)的船被設(shè)計建造出來,它們的長度、寬度、深度的尺寸都非常大,每次航行都是以最小的代價運(yùn)輸成千上萬噸原油。A)正確B)錯誤答案:對解析:[判斷題]67.Sheerforward(in)=0.2L(ft)+20首舷弧(英寸)=0.2L(英尺)+20A)正確B)錯誤答案:對解析:[判斷題]68.Navalauxiliariesaremorecloselyrelatedtocommercialshipsinappearance,buttheirmissionmayinvolveoperatingwithwarships,whichrequirescompatibilityintermsofspeed,endurance,requiredpayload,andtheabilitytoconductreplenishmentoperationsduringpoorseaconditions.軍用輔助船的外觀與商船很像,但是它們的任務(wù)可能涉及到與戰(zhàn)斗艦艇協(xié)同,這就要求輔助船具備與戰(zhàn)斗艦艇相匹配的航速、續(xù)航力、有效載荷及在惡劣海況中為戰(zhàn)艦進(jìn)行補(bǔ)給的能力。A)正確B)錯誤答案:對解析:[判斷題]69.Deletionofsheeralsotendstomaketheshipeasiertoconstruct,butontheotherhanditcouldbesaidthattheappearanceoftheshipsuffersinconsequence.取消舷弧還有利于船舶的建造。但從另一方面看,這樣有損于船舶的外形美觀。A)正確B)錯誤答案:對解析:[判斷題]70.Theactualthicknessoftheboundarylayerisindeterminatebutthepointwheretheforwardvelocityhasfallentoabout1%ofwhatitwouldbeifthewaterwerefrictionlessisconsideredtobetheouterextremityoftheboundarylayer.邊界層的實際厚度是不能確定的,但是如果水沒有摩擦力時邊界層水將隨船前進(jìn)?那么水的前進(jìn)速度下降了1%,這一處就被認(rèn)為是邊界層的外沿。A)正確B)錯誤答案:對解析:[判斷題]71.Aship?spreliminarydesignfurtherrefinesthemajorshipcharacteristicsaffectingcostandperformance.船舶初步設(shè)計將進(jìn)一步完善影響船舶造價和性能的主要參數(shù)。A)正確B)錯誤答案:對解析:[判斷題]72.allwhileconsideringtheshipaspartofaprofitabletransportation,industrial,orservicesystem.與此同時,將船舶作為盈利運(yùn)輸,工業(yè)或服務(wù)系統(tǒng)中的一分子,統(tǒng)籌考量。A)正確B)錯誤答案:對解析:[判斷題]73.Inmodernshipshavinglargebulbousbowsthelengthoverall(L.O.A.)mayhavetobemeasuredtotheextremepointofthebulb.在具有大型球鼻首的現(xiàn)代船舶上,這個總長就需要量至球鼻首的最前端。A)正確B)錯誤答案:對解析:[判斷題]74.TheoriginofclassificationisassociatedwiththenameLloyd'sRegisterofShipping,whichistheoldestsociety.船級的起源與勞埃德船級社的公司有關(guān),它是最早的船級社。A)正確B)錯誤答案:對解析:[判斷題]75.Theydescribethetestsandtrialsthatshallbeperformedsuccessfullyinorderthatthevesselwillbeconsideredacceptable其中會提到各種測試和實船海試應(yīng)該順利進(jìn)行,以便該船能被認(rèn)可交付。A)正確B)錯誤答案:對解析:[判斷題]76.ThisempiricalprocessisofcoursebackedupbyresearchworkcarriedoutbytheSociety.Thereisalsocooperationwithotherresearchorganizations.這一經(jīng)驗流程當(dāng)然會得到船級社的研究工作支持,它們也會與其他研究機(jī)構(gòu)合作。A)正確B)錯誤答案:對解析:[判斷題]77.Theretwoformulaeintermsofmetricunitswouldgive:這兩個公式按照公制單位變成:A)正確B)錯誤答案:對解析:[判斷題]78.InsomemodernshipsthereisaroundedgunwaleasshowninFigure3.2(b).在某些現(xiàn)代船上,具有圓弧舷邊頂部,如圖3.2所示、A)正確B)錯誤答案:對解析:[判斷題]79.However,attemptstofindthenaturalfrequencyofarollingshipthroughanalysisarefarfromsimple,becausethecoefficientsofthefundamentalequationarethemselvesafunctionoffrequency.但是,由于基礎(chǔ)方程的系數(shù)本身就是一個關(guān)于頻率的函數(shù),所以,要通過分析找出船舶橫搖的固有頻率遠(yuǎn)非易事。A)正確B)錯誤答案:對解析:[判斷題]80.Forashipofconventionaltype,itisvirtuallyimpossibletooperateataspeed-to-lengthratio(speedinnauticalmilesperhour,dividedbythesquarerootofthewaterlinelengthinfeet)higherthanapproximately1.3.對常規(guī)船型實際上不可能以速長比超過1.3的速度航行(速度單位為海里/小時,除以水線長度的平方根,單位是英尺)。A)正確B)錯誤答案:對解析:[判斷題]81.FromNewton'slawsofmotion,itisseenthatabodycanbeatrestormovingatconstantspeedonlyifthesumofallforcesandmomentsactingonthebodyisequaltozero.根據(jù)牛頓運(yùn)動定律,我們知道只有作用于物體的合外力與力矩為零,物體才會保持靜止或以恒定不變的速度保持運(yùn)動。A)正確B)錯誤答案:對解析:[判斷題]82.Fortankers,sizemushroomed,theincreasingdemandforpetroleumandotherrawmaterialsbytheindustrializednationsoftheworldhasnecessitatedeverlargertankersandbulkcarrierstomeettheenormousdemandatacceptablecosts.比如油輪,其尺寸正快速增長,這是由于工業(yè)化國家對石油和其他原材料的需求急劇增加,迫使各國需要以可接受的花費(fèi)建造更大的油輪和散貨船來滿足其需求。A)正確B)錯誤答案:對解析:[判斷題]83.Ifthepointissharpenoughitissometimesbettertakenattheaftercutuporataplaceinthevicinitywherethereisadiscontinuityintheship'sshape.若該點(diǎn)很凸出,那么最好取在船艉切斷處或臨近船體形狀間斷處。A)正確B)錯誤答案:對解析:[判斷題]84.Thethinlayeroffluidactuallyincontactwiththeimmersedsurfaceiscarriedalongwithitbutbecauseofviscosityashearforceisgeneratedwhichcommunicatessomevelocitytotheadjacentlayer.和浸濕表面實際接觸的一薄層流體被表面夾帶,但因為粘性而產(chǎn)生了剪力,剪力將一部分速度傳給臨近的薄層。A)正確B)錯誤答案:對解析:[判斷題]85.DataisregularlysharedininternationalconferencessponsoredbyRINA,SocietyofNavalArchitectsandMarineEngineers(SNAME)andothers.所得數(shù)據(jù)會定期在由英國皇家造船工程師學(xué)會、美國船舶與海洋工程學(xué)會等主辦的國際會議上共享。A)正確B)錯誤答案:對解析:[判斷題]86.Thedesignwaterplaneisaplaneperpendiculartothemiddlelineplane,chosenasaplaneofreferenceatornearthehorizontal;itmayormaynotbeparalleltothekeel.設(shè)計水線面是一個垂直于中線面的平面,選作水平面或水平面附近的參考平面。;它可能與龍骨平行,也可能不平行。A)正確B)錯誤答案:對解析:[判斷題]87.Itistheforceofgravitythatmakestheshipslidedowntheslipways.正是地球引力使船舶沿滑道下滑。A)正確B)錯誤答案:對解析:[判斷題]88.Themidshipsectioncoefficient,CM,istheratioofthemidshipsectionareatotheareaofarectanglewhosesidesareequaltothedraughtandthebreadthextremeamidships.Itsvalueusuallyexceeds0.85forshipsotherthanyachts.中橫剖面系數(shù)是中橫剖面面積與一個邊長分別等于吃水和船中最大船寬的長方形的面積的比值。除了快艇,一般船舶的該系數(shù)超過0.85。A)正確B)錯誤答案:對解析:[判斷題]89.Theexploitationofseafloorresource,primarilyoil,gasandhardminerals,requiresseveralphasesofunderseaoperations.開采海底資源,主要是油、氣和各種固體礦產(chǎn),需要經(jīng)歷幾個水下工作節(jié)段。A)正確B)錯誤答案:對解析:[判斷題]90.Severalmethodshavealsobeendevelopedforthemathematicalfairingofshipformsandlinkingthisupwithproductionprocesses.Discussionofthesetopics,however,isoutsidethescopeofthiswork.已有多種方法用于船型數(shù)學(xué)光順,并與生產(chǎn)過程結(jié)合起來,然而這一主題的討論,不是本書的范圍。A)正確B)錯誤答案:對解析:[判斷題]91.Aprincipleofphysicsstatesthatanymovingobjectthatcanproduceanunsymmetricalflowpatterngenerat