“Difference in Depth of Modulation”的含义是（）。A、频差B、调制度和C、调制度差D、频偏
“Difference in Depth of Modulation”的含义是（）。
- A、频差
- B、调制度和
- C、调制度差
- D、频偏
相关考题：
Whereisspecificinformationregardingheight,width,depth,andweightofaPowerSystemsserverlocated?() A.HardwareInfoCenterB.SystemPlanningToolC.OfferingInformationwebsiteD.TechnicalDeliveryandAssessmentGuide
The height of tide is the ______.A.depth of water at a specific time due to tidal effectB.difference between the depth of the water and the area's tidal datumC.difference between the depth of the water and the high water tidal levelD.difference between the depth of the water at high tide and the depth of the water at low tide
The recording fathometer produces a graphic record of the ______．A.bottom contour only up to depths of 100 fathomsB.depth underneath the keel against a time baseC.contour of the bottom against a distance baseD.depth of water against a distance base
All echo-sounders can measure the ______．A.Actual depth of waterB.Actual depth of water below keelC.Average depth from waterline to hard bottomD.Average depth of water to soft bottom
A channel is started as having a controlling depth of 38 feet. Which statement is TRUE?_____A.At least 80% of the channel is cleared to the charted depth.B.At least 50% of the channel is cleared to the charted depth.C.100% of the channel depth is clear to 38 feet.D.The sides of the channel conform to at least 50% of the controlling depth.
In determining the scope of anchor line to pay out when anchoring a small boat, one must consider the ______.A.charted depth of water onlyB.depth of water, including tidal differencesC.time and date of anchoringD.type of anchor being used
Which statement is FALSE concerning the interleave depth value？（）A、A higher interleave depth provides more protection from burst of noise on the HFC networkB、Higher interleave depth increase downstream latencyC、Lower interleave depth cause some packet loss on typical HFC networksD、None ofthe above
（）(富余水深) is the depth remaining under a ship’s bottom.A、Under-keel heightB、Under-keel clearanceC、Under-keel draftD、Under-keel depth
单选题（）is the depth of the vessel at ship’s side from the upper deck to the lowest point of the keel.AExtreme draftBMolded draftCExtreme depthDMolded depth
单选题An electronic depth finder operates on the principle that（）.Aradio signals reflect from a solid surfaceBsound waves travel at a constant speed through waterCradar signals travel at a constant speed through waterDpressure increases with depth
单选题When anchoring,it is a common rule of thumb to use a length of chain（）.Afive to seven times the depth of waterBseven to ten times the depth of waterCtwice the depth of waterDtwice the depth of water plus the range of tide
单选题In moderate wind and current what should be the length of chain with a single anchor?（）A5 times the depth of the water in good holding groundB10 times the depth of the water in shallow waterC2 times the depth of the water in poor holding groundD8 times the depth of the water in deep water
单选题Air gap is the vertical distance between the bottom of the hull and the（）.Astill water levelBwave crestCwave crest plus the charted water depth and tidal correctionsDwave crest plus the charted water depth and tidal correction and storm surge
单选题The height of tide is the （）.Adepth of water at a specific time due to tidal effectBdifference between the depth of the water and the area's tidal datumCdifference between the depth of the water and the high water tidal levelDdifference between the depth of the water at high tide and the depth of the water at low tide
单选题Stand of the tide is that time when（）.Athe vertical rise or fall of the tide has stoppedBslack water occursCtidal current is at a maximumDthe actual depth of the water equals the charted depth
单选题Which statement is FALSE concerning the interleave depth value？（）AA higher interleave depth provides more protection from burst of noise on the HFC networkBHigher interleave depth increase downstream latencyCLower interleave depth cause some packet loss on typical HFC networksDNone ofthe above
单选题Point Judith Harbor of Refuge（）.Ais used mostly by towing vesselsBhas a maximum depth of 14 feet (4.3 meters) at MHWCWest Gap has a controlling depth of 24 feetDis entered through the East Gap or the West Gap
单选题To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.Athe actual depthBadded to or subtracted from the charted depthCmultiplied by the charted depthDdivided by the charted depth
单选题To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.Aweight of cable to weight of vesselBweight of cable to weight of anchorClength of anchor to depth of waterDlength of cable to depth of water
单选题A wind has caused a difference between drafts starboard and port. This difference is（）.AlistBheelCtrimDflotation
单选题In bad weather，what length of chain should be used with a single anchor? （）A3 times the depth of waterB6 times the depth of waterC10 times the depth of waterD15 times the depth of water
单选题All echo-sounders can measure the（）.Aactual depth of waterBactual depth of water below keelCaverage depth from waterline to hard bottomDaverage depth of water to soft bottom
单选题When anchoring a vessel under normal conditions，which scope of chain is recommended? （）AFour times the depth of waterBTwo and one-half times the depth of waterCFive to seven times the depth of waterDFifteen times the depth of water