单选题In navigation the abbreviation “DF” refers to（）.ADeep FloodBDirection FinderCDouble FreeboardDDangerous Fertilizer
单选题
In navigation the abbreviation “DF” refers to（）.
A
Deep Flood
B
Direction Finder
C
Double Freeboard
D
Dangerous Fertilizer
参考解析
解析：
暂无解析
相关考题：
The classic semantic triangle fails to answer() A what precisely the link between the symbol and the concept isB what symbol/form. refers toC what referent refers toD what thought/reference refers to
This Certificate will remain in force until May 1,1989.________.A.This Sentence refers to the validity of the CertificateB.This Sentence refers to the time of the CertificateC.This Sentence refers to the date of the CertificateD.This Sentence refers to the issue of the Certificate
The Experimental Lighthouse-buoy has no navigational significance and may be removed at will．The above sentence means ______.A.It's of no use for navigation and would be removed with noticeB.It's useful in navigation and may be removed without noticeC.It's helpless in navigation and may be removed without noticeD.It's helpful in navigation and may be removed without notice
The abbreviation L.W.R.P. on the navigation maps means ______.A.low water reference planeB.low winter runoff pointC.least water river planeD.land wall reference point
Loran-C is which type of navigation system ________．A.Hyperbolic，long-range navigation systemB.Short-range electronicC.Long-range，high frequency navigation systemD.Long-range，with a frequency of 1950 kHz
The documents you should provide are contract, L/C , invoice and B/L, L/C is the abbreviation for ( )，B/L is the abbreviation for ( ).A. Letter of Credit，Packing List B. Leaking of Containers，Bill of LadingC. Letter of Credit, Bill of Lading D. Leaking of Containers, Packing List
An administrator analyzes a poorly performing system and suspects that the issue is related to CPU resource. Upon reviewing output of vmstat, the administrator is concerned with the values in the ‘pc’ and ‘ec’ columns. Which definition describes these two headings?（）A、'pc' refers to the number of physical processors consumed, while 'ec' refers to the percentage of entitled capacity consumed.B、'pc' refers to the 'physical CPUs' and lists how many are left un-allocated, while ec' refers to the 'entitled CPUs' and lists what amount is currently allocated to the LPAR.C、'pc' refers to the 'processor count' and reflects how many CPUs are allocated to the LPAR, while 'ec ' refers to the 'extra capacity' and lists how much above the LPAR entitlement is being consumed.D、'pc' refers to 'processor cards' and reflects how many MCM modules are actually being used by this LPAR, while 'ec' refers to the 'entitled CPUs'and lists what amount is currently allocated to the LPAR.
单选题Integrated Bridge and Navigation Systems(IBS/INS) provide excellent performance and reliable navigation under all conditions by（）.Aintegrating well-proven, harmonizing equipmentBintegrating all equipment in the bridgeCan intelligent platform with ECDIS and RadarDthe control center based on ECDIS
单选题No damage of any kind（）aids to navigation or navigation facilities.Ashould be done toBshould not be done toCmust be done withDmust not be done with
单选题Mariners should ensure correct（）of aids to navigation during twilight periods when some lighted aids to navigation are lit while others are not.AidentificationBdistinctionCdiscriminationDclearly seeing
单选题The abbreviation "GM" is used to represent the （）Aheight of the metacenterBfighting armCrighting momentDmetacentric height
单选题This Certificate will remain in force until May 1，2009. （）.AThis Sentence refers to the validity of the CertificateBThis Sentence refers to the time of the CertificateCThis Sentence refers to the date of the CertificateDThis Sentence refers to the issue of the Certificate
单选题Class I and II private aids to navigation in or along navigable waters of the United States are listed in the（）.ASailing DirectionsBLight ListCList of Private AidsDAids to Navigation Manual
单选题The abbreviation L.W.R.P. on the navigation maps means（）.Alow water reference planeBlow winter runoff pointCleast water river planeDland wall reference point
单选题SWEEP INT on radar panel is the abbreviation of（）.Asweep introductionBsweep interestCsweep intentionDsweep intensity
单选题What does the abbreviation SWL stand for?（）.ASignal wave lettersBShip without lightCSafe water lineDSafe working load
单选题The abbreviation RYC in a marine cable generally stands for（）.Areferring to your crewBreference for your captainCreturn to your cabinDreceived your cable
单选题The abbreviation BDC means （）.ABoston Diesel CompanyBbase circle diameterCswitch board caseDbottom dead center
单选题What does the abbreviation VHF stand for?（）AVessel's Hoisting FlagBVery High SafetyCVessel's Homing FrequencyDVery High Frequency
单选题The Consol navigation system，used in Russian and Northern European waters，can be used（）.Afor precise navigation in coastal watersBby measuring the phase difference of the dots and dashesCas an aid to ocean navigationDif the vessel is fitted with a special Consol receiver
单选题Most Navigation System equipment is（）from the bridge, a unique location that allows for a centralized,safe and efficient management of ship navigation.AaccessibleBrestrictedCdeterredDfar away
单选题The period of a lighted aid to navigation refers to the（）.Adate of construction or establishmentBlength of time between flashes of the lightCtime required for the longest flash of each cycleDtime required for the light to complete each cycle