相关题目
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 ().
40. All charts and publications should be kept up to date with the () amendments.
