航海英语必考题(8)

权威考试

D. Coast Pilot 答案： C

50. What is the main purpose of DGPS? A. to improve positioning accuracy B. to decrease positioning accuracy C. reduce operational cost

D. to simplify operation process 答案： A

51. Which one of the followings is incorrect about magnetic compass? A. the magnetic compass compulsory on any vessel

B. the magnetic compass needs to be calibrated to compensate for local magnetic distortion C. the magnetic compass is prone to error

D. the magnetic compass is always placed inside steel construction 答案：D

52. SOLAS requires a lifesaving training manual be provided in each crew cabin or in the ________.

A. engineering control station B. bridge

C. fire control room

D. recreation and messrooms 答案：D

53. Your radar displays your ship off center. As you proceed on your course, your shp s marker moves on the PPI scope while echoes from land masses remain stationary. What is this display called?

A. true motion B. stabilized C. head up D. off center 答案：A

54. When crossing a front isobars (等压线) tend to __________. A. pass smoothly across the front with no change

B. change from smooth curves within the air mass to sharp bends at the front C. change from sharp bends within the air mass to smooth curves at the front D. become closer together at the front and pass through in straight line 答案：C

55. Data relating to the direction and velocity of rotary tidal currents can be found in the

_________. A. Tide Tables

B. Tidal Current Tables C. Nautical Almanac D. Mariner s Guide 答案：B

56. Inflammable cargo shall never be stowed in the holds _________ to the engine room. A. appropriate