相关题目
50. *On a Mercator chart the scale varies with (). This is noticeable on a chart covering a relatively large distance in a north-south direction.
49. Distance along a track line is measured on a Mercator chart by using the ().
48. Why does distance always have to be measured from the nearest scale on a Mercator chart?
47. The only cylindrical chart projection widely used for navigation is the ().
46. Admiralty standard nautical charts are ideal for the following usages except for ().
45. *Cargoes mainly handled by Nanjing port can be found in ().
44. *All marks within the IALA system are distinguished by (). ① material; ②topmark; ③ light characteristics; ④ color
43. All marks within the IALA system are distinguished by (). ① shape; ② top mark;③ light characteristics; ④ color
42. The International Association of Lighthouse Authorities ( ) buoyage system A uses some types of marks to distinguish safe navigation. Which type( ) does( ) not belong to the system?
41. *Despite of every effort made to ensure the accuracy of the information on Admiralty charts and other publications, the information may ().
