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线路中心线 center line of track
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更多 “线路中心线 center line of track” 相关考题
考题
It may take some time to get the British economy back on____________.
(A) way(B) road(C) track(D) line
考题
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
考题
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
考题
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 ______．A.Closer to the coastB.Farther from the coastC.On the track line ahead of the fixD.On the track line behind the fix
考题
The line connecting the Loran-C master station with a secondary station is called the ______．A.Focus lineB.Base lineC.Side lineD.Center line
考题
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
考题
（）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
考题
单选题（）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
考题
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（）.A
it is fasterB
it can be used in both the immediate action and the delayed action situationsC
in 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 completedD
it returns the vessel to the original track line on a reciprocal course
考题
单选题A disk with a horizontal line through its center, equivalent to the summer load line, is called the（）.A
deadrise markB
maximum alloable draft markC
pilmsoll markD
tonnage mark
考题
单选题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
考题
单选题The center of buoyancy is located at the（）.A
geometric center of the waterplane areaB
intersection of the vertical centerline and line of action of the buoyant forceC
center of gravity of the vessel corrected for free surface effectsD
geometric center of the displaced volume
考题
单选题A crankshaft whose center of gravity coincides with its center line is said to be （）.A
dynamically balancedB
statically balancedC
counter balancedD
resonantly balanced
考题
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（）.A
Closer to the coastB
Farther from the coastC
On the track line ahead of the fixD
On the track line behind the fix
考题
单选题On a gnomonic chart，a great circle track between Los Angeles and Brisbane will appear as a （）.A
loxodromic curveB
curved line concave to the equatorC
straight lineD
spiral approaching the poles as a limit
考题
单选题A crankshaft whose center of gravity coincides with its center line is said to be（） Ⅰ.statically balanced Ⅱ.dynamically balancedA
Ⅰ onlyB
Ⅱ onlyC
both Ⅰ and ⅡD
neither Ⅰ nor Ⅱ
考题
单选题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
考题
单选题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
考题
单选题Laying out a line in successive circles flat on deck with the bitter end in the center is known as（）.A
coilingB
fakingC
flemishingD
lining
考题
单选题When the vessel shafting are installed, the slightly inclined of the shaft line should be rectified by（）A
adjusting the position of the intermediate bearingB
changing the position of the main engine installationC
adjusting the center line of the propellerD
changing the position of the thrust block
考题
名词解释题道岔中心线表示法 method of indicating the center line of turnout
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