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1、第一组： Major coast radio stations all over the world transmit，at regular intervals and in code，weather information for ships within range. Weather information consists of ten parts，of which ships usually make use of three，that is，warning，synoptic situation and forecast. With weather information，marine
2、rs are able to keep away from disastrous weather at sea and reduce the danger a great deal. As terrible weather is predicted，ships can take precautions beforehand，by delaying the voyage or seeking shelter in a safe place. If there is a high sea or a long swell，they can take some measures to safeguar
3、d the cargo and the ship. 89 Weather information for ships is usually transmitted by coast radio stations _. A. any time of the day B. at fixed time C. in different languages D. in some parts of the world 90 Coast radio stations generally provide weather information for ships _. I. in code, II. In a
4、 certain language, III. in written form A. I B. I + II C. II D. I + II + III 91 Weather information usually tells people something about weather _. A. afterwards B. in advance C. at the same time D. when theres bad weather 92 Of the following, _ is not the way for ships to keep away from bad weather
5、. A. delaying voyage B. staying in port C. speeding up and running away D. pumping out ballast water 第二组： Generally a ships motion contains components of pitch and roll simultaneously. Both these motions may cause the ship to head first to one side of its course, and then to the other. This is calle
6、d yawing. When waves are sufficiently large, the whole vessel may be moved vertically up and down; this is called heave. Large waves passing under the ship from one side impart a side-to-side motion known as sway. The movement of the whole ship ahead and astern is called surge. If the ship is under
7、present at any moment and at any particular place on the surface of the sea are complex, because they are the product of large numbers of different wave motions, of different sizes and moving in different directions, so also the motion of the ship is complex, and is the product of components of each
8、 of the six ship motions. 93 What does yawing mean in the passage? I. Ships angular motion about vertical axis, II. The ship first moves to one side of its course and then to the other, III. Ships angular motion about longitudinal axis. A. I B. II C. III D. I or II 94 Which one of the followings abo
9、ut surge is incorrect? A. surge is the ships movement ahead and astern along longitudinal axis B. surge is caused by duty officers improper manoeuvring C. surge may cause ships speed increased D. surge may cause ships speed decreased 95 Which of the following is the characteristics of waves? I. Wave
10、s move in different direction, II. Waves are of different sizes and on the surface of the sea, III. Waves present at any moment. A. I B. I + II C. III D. I + II + III 96 The best title for this passage may be _ A. ships motions B. waves and its impact C. waves characteristics D. ships rolling and pi
11、tching 答案A ships head up, or un-stabilised, radar display has the ships heading marker fixed at 000, at the top of the screen. All targets, fixed or moving, then move relative to the ships position in the center of the screen and the heading marker. As the ship moves through the water, fixed target
12、appear to track down the screen on a reciprocal heading at the speed the ship is moving and when the ship alters course targets appear to rotate in the opposite direction to that of the ship, so targets appear to move on the radar screen while the ships heading remains fixed. The coating on a radar
13、display is designed to allow a certain amount of afterglow（余辉）of targets, which in the ships head up mode causes smearing（拖尾）and may make the identification of smaller targets difficult. In addition, when targets, particularly large landmasses, are in close proximity interference occurs, which can f
14、urther inhibit the detection of small targets.1.When radar is set to ships head up display, all fixed targets displayed on the screen will appear to _.A. track down the screen on a reciprocal heading at the speed the ship is movingB. rotate in the same direction as the ship rotatesC. make the identi
15、fication of smaller targets difficultD. allow a certain amount of afterglow of targets2.In the ships head up mode, if the ship rotates starboard-wise all fixed targets on the screen will appear to _.A. rotate starboard-wise B. rotate port-wiseC. remain stationary D. move on a reciprocal heading at the speed the ship is moving89-BABD93-DBDA3.Afterglow of targets will _.A. have the ships heading marker fixed at 000B. caus
