单选题A snag or other underwater obstruction may form a（）.AV-shaped ripple with the point of the V pointing upstreamBV-shaped ripple with the point of the V pointing downstreamCsmall patch of smooth water on a windy dayDsmoothing out of the vessel's wake
单选题
A snag or other underwater obstruction may form a（）.
A
V-shaped ripple with the point of the V pointing upstream
B
V-shaped ripple with the point of the V pointing downstream
C
small patch of smooth water on a windy day
D
smoothing out of the vessel's wake
参考解析
解析：
暂无解析
相关考题：
We also use other forms of communication () we may be aware or unaware. A、to whichB、of whichC、whichD、that
“Then what, if I may ask,” said the other, evidently somewhat () A、ethicalB、fulfillmentC、integrityD、nettled
In a civil case, one party may file an action; the other party may or may not()the claim.A.admitB.confessC.agree
which literary form. flourished in elizabethan age more than any other form. of literature?A. Novel.B. Drama.C. Poetry.D. Essay.
A certificate of deposit (CD) is issued by a depository- institution (56) that the holder has deposited at the institution a certain mount of money for a certain period of time. By issuing a certificate of deposit, a bank, or (57) institution, gives its pledge to (58) the certificate at maturity and to pay a certain rate of interest for the use of the deposited funds.Certificates of deposit are issued in several different forms. They may be negotiable or nonnegotiable, If a CD is negotiable it may be sold on the secondary market (59) to maturity. Usually only large CDs are issued in negotiable form. CDs may also be issued either in bearer or registered form. Negotiable CDs are usually always issued in bearer form. because of the ease with which ownership may be (60) .(41)A．evidenceB．factC．proofD．prove
Self-contained breathing apparatus is used to ______.A.make underwater repairs to bargesB.determine if the air in a tank is safe for menC.enter areas that may contain dangerous fumes or lack oxygenD.resuscitate an unconscious person
The short time schedule may be a big problem, but there are many other things we can do to catch up. (翻译)
This website may contain links to other websites ____ privacy practices may be different from ours. A、thatB、whichC、whoD、whose
What s right for you may be wrong for me, and() . A、oppositeB、on the contraryC、vice versaD、on the other hand
______, where the ship is docked for hull coating renewal, and for any other required underwater work to be carried out, when the opportunity is taken to make other repairs.A.Voyage repairsB.Routine dockingC.Damage repairsD.Conversion
A vessel engaged in ______ shall not impede the passage of any other vessel navigating within a narrow channel or fairway．A.mine clearance operationB.towing operationC.dredging or surveying or underwater operationD.fishing
As the displacement of a vessel increases,. the detrimental effect of free surface ______.A.increasesB.decreasesC.remains the sameD.may increase or decrease depending on the fineness of the vessel’s form
（）morphemes are those that cannot be used independently but have to be combined with other morphemes, either free or bound, to form a word.AFreeBBoundCRootDAffix
（）morphemes are those that cannot be used independently but have to be combined with other morphemes, either free or bound, to form a word.A、FreeB、BoundC、RootD、Affix
单选题A snag or other underwater obstruction may form a（）.AV-shaped ripple with the point of the V pointing upstreamBV-shaped ripple with the point of the V pointing downstreamCsmall patch of smooth water on a windy dayDsmoothing out of the vessel's wake
单选题On a ship，a fire pump may be used for other purposes if（）.Athe other services are run off a reducing station with a pressure gageBa separate fire pump is available for use on the fire mainCall other services are operated by a manifold near the pumpDAll of the above
单选题If plastic film insulation becomes damaged in air conditioning system, （） may form within the film.AevaporationBcondensationCliquefiesDvaporization
单选题We can infer(推断) ______.ADonald may study hard at mathBthe teacher may criticize DonaldCTommy may share the prize with other students
单选题Sludge may form in the crankcase of an air conditioning compressor as a result of （）.Abubbling refrigerantBoverheating and oxidationClowered operating temperaturesDreducing the cloud or flash point
单选题A self-contained breathing apparatus is used to（）.Amake underwater repairs to bargesBdetermine if the air in a tank is safe for menCenter areas that may contain dangerous fumes or lack oxygenDresuscitate an unconscious person
单选题By night，you sight the lights of a vessel engaged in underwater operations. If an obstruction exists on the port side of the vessel，it will be marked by（）.Aa floodlightBtwo red lights in a vertical lineCa single red lightDany visible lights
单选题A vessel engaged in（）shall not impede the passage of any other vessel navigating within anarrow channel or fairway.Amine clearance operationBtowing operationCdredging or surveying or underwater operationDfishing
单选题（），where the ship is docked for hull coating renewal, and for any other required underwater work to be carried out, when the opportunity is taken to make other repairs.AVoyage repairsBRoutine dockingCDamage repairsDConversion
单选题Halon gas will decompose and may form very hazardous toxic fumes when discharged（）.Adirectly on flamesBat room temperatureCin an extremely cold climateDNone of the above
单选题_____ other than compounds may be divided into roots and affixes.APolymorphemic wordsBBound morphemesCFree morphemes
单选题When you have filled in the form, keep the top part and send _____ part to the bank.AothersBotherCthe otherDthe other
单选题When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be （）Aan obstruction in an cylinderBwater accumulation in some engine cylindersClow starting air pressureDlow scavenge air pressure
单选题You may join both Rockwatch and Wildlife Watch clubs by ______ .ACalling the two clubsBproviding referencesCApplying separatelyDfilling in one form