线路中心线 center line of track
线路中心线 center line of track
相关考题：
It may take some time to get the British economy back on____________. (A) way(B) road(C) track(D) line
Distance along a track line is measured on a Mercator chart by using the ______.A.latitude scale near the middle of the track lineB.longitude scale near the middle of the track lineC.latitude scale at the midlatitude of the chartD.latitude or longitude scale at the middle of the scale
What is NOT an advantage of the rhumb line track over a great circle track?A.Easily plotted on a Mercator chartB.Negligible increase in distance on east-west courses near the equatorC.Does not require constant course changesD.Plots as a straight line on Lambert conformal charts
You are running parallel to the coast and take a running fix using bearings of the same object．If you are making less speed than used for the running fix，in relation to the position indicated by the fix，you will be ______．A.Closer to the coastB.Farther from the coastC.On the track line ahead of the fixD.On the track line behind the fix
The line connecting the Loran-C master station with a secondary station is called the ______．A.Focus lineB.Base lineC.Side lineD.Center line
At all angles of inclination, the metacenter is ______.A.vertically above the center of buoyancyB.vertically above the center of gravityC.at the intersection of the upright vertical centerline and the line of action of the buoyant forceD.at the geometric center of the underwater volume
（）leads at right angles to the center line from the stern to the shore.A、An aft breast line.B、An aft springC、The stern lineD、A fore breast line
单选题（）leads at right angles to the center line from the stern to the shore.AAn aft breast line.BAn aft springCThe stern lineDA fore breast line
单选题Besides saving distance along the track line，another advantage of the Scharnow Turn over the Williamson Turn in a man overboard situation because（）.Ait is fasterBit can be used in both the immediate action and the delayed action situationsCin fog，if the turn is started as soon as the man goes over，the vessel will be at the point where he went over when the turn is completedDit returns the vessel to the original track line on a reciprocal course
单选题A disk with a horizontal line through its center, equivalent to the summer load line, is called the（）.Adeadrise markBmaximum alloable draft markCpilmsoll markDtonnage mark
单选题What is NOT an advantage of the rhumb line track over a great circle track? （）AEasily plotted on a Mercator chartBNegligible increase in distance on east-west courses near the equatorCDoes not require constant course changesDPlots as a straight line on Lambert conformal charts
单选题The center of buoyancy is located at the（）.Ageometric center of the waterplane areaBintersection of the vertical centerline and line of action of the buoyant forceCcenter of gravity of the vessel corrected for free surface effectsDgeometric center of the displaced volume
单选题A crankshaft whose center of gravity coincides with its center line is said to be （）.Adynamically balancedBstatically balancedCcounter balancedDresonantly balanced
单选题You are running parallel to the coast and take a running fix using bearings of the same object.If you are making less speed than used for the running fix，in relation to the position indicated by the fix，you will be（）.ACloser to the coastBFarther from the coastCOn the track line ahead of the fixDOn the track line behind the fix
单选题On a gnomonic chart，a great circle track between Los Angeles and Brisbane will appear as a （）.Aloxodromic curveBcurved line concave to the equatorCstraight lineDspiral approaching the poles as a limit
单选题A crankshaft whose center of gravity coincides with its center line is said to be（） Ⅰ.statically balanced Ⅱ.dynamically balancedAⅠ onlyBⅡ onlyCboth Ⅰ and ⅡDneither Ⅰ nor Ⅱ
单选题Distance along a track line is measured on a Mercator chart by using the （）.Alatitude scale near the middle of the track lineBlongitude scale near the middle of the track lineClatitude scale at the midlatitude of the chartDlatitude or longitude scale at the middle of the scale
单选题At all angles of inclination, the metacenter is（）.Avertically above the center of buoyancyBvertically above the center of gravityCat the intersection of the upright vertical centerline and the line of action of the buoyant forceDat the geometric center of the underwater volume
单选题Laying out a line in successive circles flat on deck with the bitter end in the center is known as（）.AcoilingBfakingCflemishingDlining
单选题When the vessel shafting are installed, the slightly inclined of the shaft line should be rectified by（）Aadjusting the position of the intermediate bearingBchanging the position of the main engine installationCadjusting the center line of the propellerDchanging the position of the thrust block
名词解释题道岔中心线表示法 method of indicating the center line of turnout