期航海学二三副Fortyfour voyages two and three.docx

1、期航海学二三副Fortyfour voyages two and three44期航海学二三副916（Forty-four voyages two and three）Forty-four nautical studies of _916No. 2/3 of 500 gross tons and above vessels in coastal navigation areas(1 point for each question, 100 questions)1. When the calculation of precision is higher in navigation, the ea

2、rth is usually treated as:A, spheroidB, ellipsoidC, ellipsoidD, irregular geometryAnswer: BGeographical longitude and geographical latitude are based on the _.A, the sphere of the earthB, the earth ellipsoidC, earth ellipsoidD, spherical rectangular coordinate systemAnswer: B3. The direction of the

3、warp and weft direction is determined according to _.A, the direction of the departure point relative to the point of arrivalB, the point of arrival relative to the departure pointC. The geographical coordinates of the starting pointD, the geographical coordinates of the arrival pointAnswer: B4, 40

4、N phi at some point on the earth, lambda = 120 E, it is symmetrical to the center of the earth point is:A, 40 S, phi lambda = 120 WB, 40 S phi, lambda = 120 E40 N, C, phi lambda = 060 W40 S, D, phi lambda = 060 WAnswer: D5. Which of the following is a definite problem in establishing the geodetic co

5、ordinate system? , determine the ellipsoid parameters; , locate the center of the ellipsoid; , determine the direction of the axisA, , B, , C, , D, , , Answer: DThe law of the circular direction of the half circle is:A, in SE semicircle, circle is equal to 180 with semicircle readingsB, in the NE se

6、micircle, circle is equal to 360 minus the semicircle readingsC, in SW semicircle, circumference is 180 , semicircle readingsD, in NW semicircle, circumference is 270 , semicircle readingsAnswer: C7. The side Angle is:A, the Angle between the first and last line to the target lineB, object direction

7、C, true heading minus true directionD, the Angle of the true north to the bearing lineAnswer: A8, a ship sudra heading 140 , sudra 2 E, the measured something tuo compass bearing 350 , then the target Angle is:A, 210 B, 152 to the leftC and 148 to the leftD, 212 Answer: A9, a ship heading 045 , the

8、geomagnetic 2 W, 1 E compass, the ship left beam target true bearing as follows:A, 314 B, 316 C and 135 D, 134 Answer: A10, one wheel by 44 N sail southward along the meridian, poor log readings of 240 , delta L = 0%, regardless of outside influences and navigation error, etc., has arrived in the la

9、titude of _.A, equal to 40 NB and more than 40 NC, less than 40 ND. Cant be sureAnswer: C11. The height of the setting object is H (unit: m), and the height of the observer is e (unit: m). In theory, the observer can see the horizontal distance D, (unit: n mile) for _.A, 2.09B, 2.09C, 2.09 + 2.09D,

10、2.20Answer: A12. Which of the following factors does the beacon tower range of the Chinese charts and charts?A, high lightB. Light intensityC, ground curvatureD. the actual eye height of the observerAnswer: DThe speed of water is the speed of the ship in _. , no romantic; , have no flow wind; , flow

11、 without wind; , romanticA, only B, C, , , D, , Answer: B14, a sailing ship, the relative log type change rate of the ship, delta L = 0%, the sea area has the flow, the velocity is 2kn, the distance of the log after 1h is:A, 0 0.B, a + 2 0.C, 2 -. 0D. It depends on the wind and flow direction of the

12、 sea areaAnswer: A15. On the mertograph, a graphic on the graph is similar to that on the ground.A, graphics with A certain areaB, infinitesimal graphicsC, any size of the graphD, graphics within the entire mapAnswer: BThe limit accuracy of the scale of the drawing error in chart painting is no more

13、 than 0.1 mm, and the scale is 1:10 000.A, 5 mB, 10 mC, 15 mD, 2 mAnswer: BEqual Angle transverse cylindrical projection, or gauss-klug projection, is often used to draw in sailing:A, hemisphere star mapB, large circle chartC, Mercator sea chartsD, large scale harbor planAnswer: DThe ships are saili

14、ng along the coast and along the coast, usually using the constant route line, which is because:A and the Mercator chart is A straight line, the shortest route between two pointsB, sailing on the constant direction line, the ship is easy to operate and has little impact on the voyageC, constant dire

15、ction line is equal Angle route, and can maintain the equiangular characteristics of the chartD and the constant - direction line can be kept in line with the increasing of the latitudeAnswer: B19. The increasing rate of latitude of each parallel in the Mercator chart is:A, fixedB. Change with longitudeC, change with local scaleD, change with the scale of chart scaleAnswer: AThe following statement about gauss projection is incorrect:A, use the earth