C. Morse Code
D. Either visual or sound signals 058.An Aldis lamp is used for ________.
A. transmitting Morse code B. flashing flags
C. sending flag signals D. sending sound signals 059.Burgee-shaped flags are used as substitutes to show ________. A. \ B. \ C. \
D. \
060.________ are used in fog and similar circumstances when visual signals can not be seen. A. Visual signals B. Substitutes
C. Pennant-shaped flags
D. The ship's siren，whistle or bell Passage 16
When the senders of goods have large shipment to make，and especially when bulk cargo is concerned，it is advisable that they have some ships at their disposal. Some of the big companies set up a fleet of their own，but the rest may find it more profitable to hire instead of building or buying ships. This is called \chartering of the ship is usually done through the intermediary of brokers，who，when hired，will go through all the necessary formalities on behalf of the charterer. In London there is a special center \，where the brokers operate in much the same way as stock and share brokers on a stock exchange. But it is easy for home shippers to hire Chinese or foreign ships through China National Chartering Corporation，which takes care of chartering business on orders from various import and export corporations.
061.When large shipment is concerned，________ is not the way for the sender to have ships at their disposal. A. to charter ships B. to build ships C. to buy ships D. to scrape ships
062.In chartering all the necessary formalities are performed through ________. A. the intermediary of agents B. the intermediary of brokers C. the charterers D. the \063.The function of \
A. to deal with stocks B. to exchange cargoes C. to operate on shares D. to charter ships
064.China National Chartering Corporation takes care of chartering business for home shippers. \of \
A. to pay attention to B. to be concerned with C. to be liable for D. to take charge of
Passage 17
A tropical storm is not so extensive as the depression of higher latitudes but，within 75 miles or so of the center，the wind is often far more violent，and the high and confused seas near the center may cause considerable damage to large and well-found ships，while small vessels (for example，destroyers) have foundered. The danger is still greater when ships are caught in restricted waters without adequate room to maneuver. Within 5 to 10 miles of the center the wind is light or moderate and variable，the sky is clear or partially so，and there is a heavy，sometimes mountainous，confused swell. This area is known as the \through the relatively windless center of the storm the wind will suddenly，and with great violence，commence
to blow from a direction opposite to that experienced on the other side of the windless center. Due to torrential rain visibility near the storm center is almost nil.
065.Within ________ of a tropical storm center，the wind is violent. A. no more than 75 miles B. not more than 75 miles
C. 75 miles or a greater distance D. about 75 miles
066.Among the following，________ one may not be found in the \ A. The visibility is moderate or good B. The wind is light or moderate C. The sky is clear or partly cloudy D. The swell is low or moderate.
067.In the passage，\ A. a ship has been found in any place B. a ship has been found in good visibility
C. a ship with all the necessary equipment properly maintained D. a ship in huge size
068.The visibility near tropical storm center is ________. A. Very poor B. Poor C. Moderate D. Good
Passage 18
By turning the GAIN control clockwise，the gain of the receiver increases and the observing range of the target expands. Adjust this control so that the best pictures may be displayed on the screen，according to the range scale in use. In the short range，it is advisable to operate the equipment with this control set at a setting where the receiver gain is rather lowered a little. In the long range，it is advisable to operate the equipment with this control set at a setting where the receiver gain is rather increased a little. With too little gain，the small targets are missed and there is a decrease in the detected range. With excessive gain，since the screen becomes brighter because the noise increases，the contrast between echoes and background noise reduces，making target observation more difficult. In the crowded regions，the gain may be reduced to clear the picture. 069.Switching from short range to long range，you will have to _______. A. turn the Gain control clockwise B. turn the Gain control anticlockwise C. turn off the Gain
D. keep the Gain control remaining in its original position
070.By turning the Gain clockwise，the contrast between echoes and background noise will _______. A. increase B. decrease C. not change
D. increase or decrease according to the range scale in use
071.By _______ the best picture will be displayed on the screen，. A. turning the Gain control clockwise B. turning the Gain control anticlockwise
C. keeping the Gain control remaining in its original position
D. increasing or decreasing the gain according to the range scale in use 072.With too little gain，_______.
A. the target observation will be more difficult under the increasing contrast B. the contrast between echoes and background noise reduces C. the screen becomes brighter because the noise increases
D. the small targets are missed and there is a decrease in the detected range
Passage 19
BISCAY: SW 3 OR 4 INCREASING 6 TO GALE 8，THEN VEERING NW 5. RAIN THEN SHOWERS. MODERATE OR POOR BECOMING GOOD. FINISTERRE: WESTERLY 6，LOCALLY GALE 8，VEERING NW 5. RAIN THEN SHOWERS. MODERATE OR POOR BECOMING GOOD. EAST NORTHERN SECTION: W OR SW 6 TO GALE 8，BUT IN NORTH-EAST CYCLONIC 4 AT FIRST，AND IN NORTH-WEST SOUTHERLY 6 TO GALE 8 AT FIRST. WINTRY SHOWERS. MAINLY GOOD. WEST NORTHERN SECTION: IN NORTH，CYCLONIC 6 TO GALE 8，LOCALLY SEVERE GALE 9，BECOMING VARIABLE 3 OR 4. WINTRY SHOWERS. MAINLY GOOD. MODERATE ICING IN WEST AT FIRST WITH TEMPERATURE -2℃ TO -5℃. IN SOUTH WESTERLY 6 TO GALE 8，LOCALLY SEVERE GALE 9，BACKING SOUTHERLY AND INCREASING LOCALLY STORM 10 LATER. WINTRY SHOWERS THEN SNOW.MAINLY GOOD BECOMING MODERATE. 073.Backing means the wind _______. A. is changing clockwise in direction B. is changing anticlockwise in direction
C. is changing cyclonically or variably in direction D. remains unchanged in direction at the time
074.The visibility in EAST NORTHERN section is mainly _______. A. poor B. moderate C. good D. very good
075.In north part of WEST NORTHERN section，the wind is _______. A. cyclonic 6 to gale 8 at first B. cyclonic 4 at first C. westly 6 to gale 8 D. variable 3 or 4 at first 076.
This passage is likely to be under the heading of ________.
A. FORECAST B. GALE WARNING C. SYNOPSIS D. STORM WARNING
Passage 20
The certainty with which the ship's position in coast waters can be known at any moment depends very much on the frequency with which known objects can be observed，the accuracy of the techniques used in making the observations，and the accuracy with which the navigator estimates forces(such as the wind and the tidal stream ) that might set the ship off her desired course．
The navigator should always try to reduce the uncertainty in his observations，or at least to recognize the possibility of uncertainty in the techniques he is using．Thus，for example，a range taken by radar is more accurate than a radar bearing，particularly on the bow，a transit of objects marked on the chart has greater certainty than a magnetic compass bearing; a vertical sextant angle and a bearing carries less uncertainty than two bearings; and son on．
The prudent navigator masters all the techniques of coastal navigation and at any given moment selects those which give the greatest certainty to his fix or DR position．
077.The certainty of ship's position in coastal waters depends on ______． A. the frequency of known object being observed
B. the accuracy of the techniques used in making the observation
C. The accuracy of officers' estimating forces，such as wings and currents D. All of the above
078.How should the navigator do when observing ship's position in coastal waters? A. He should use radar ranges instead of radar bearings，if possible B. He should always try to make the uncertainty low in his observation
C. He should know the possibility of uncertainty in the techniques he is using D. He should take A，B and C into account 079.Which one of the followings is incorrect?
A. Winds and currents may deviate your vessel from your desired course
B. A magnetic compass bearing has less uncertainty than a transit of objects marked on the chart C. A vertical sextant angle and a bearing has greater certainty than two bearings
D. The prudent navigator should choose those techniques with greatest certainty to his fix 080.What is the passage mainly discussed? A. Variety of fixing method B. Techniques of position-fixing C. Position-fixing in coastal waters
D. Certainty and uncertainty in the techniques being used
Passage 21
It has been reported that one of our vessels suffered an accidental release of dry powder. This happened during a routine，three monthly test of the system. The third officer was checking the fixed dry powder extinguishing system and decided to check the content of the pilot bottle. This particular system has two valves，one on the bottle itself with the pressure gauge behind it and the other one isolating the pilot bottle from the system. In order to check the pressure，the officer changed the position of the isolating valve into position he thought closed (perpendicular to the pipeline) and opened the bottle valve. By doing that he activated the dry powder system and the entire 1800kgs of dry powder was discharged on deck through the dry powder manifold monitors.
A lesson to be learnt from the above incident - make sure that not only the isolation valve is close but also the pipe is disconnected to avoid accidental release of dry powder. 081.When did the accident happen? A. During a routine survey
B. During a test three months ago
C. During a routeing test three months ago
D. During a routine test at intervals of three months 082.What did the third officer want to do?
A. He wanted to check the content of pilot bottle.
B. He wanted to check the content of fixed dry powder system. C. He wanted to check the valves for leakage.
D. He wanted to check the pressure gauge of pilot bottle.
083.The closed position of the isolating valve the third officer thought is that ______? A. the valve was perpendicular to the pipeline.
B. the valve was changed to any position other than perpendicular to the pipeline.
C. the valve was perpendicular to the pipeline and the manifold monitors was shut too.
D. Not mentioned in the passage.
084.According this passage，which one of the followings is incorrect? A. The system should be checked at regular interval of three months. B. pilot bottle can't be checked at any time
C. The entire dry powder was accidentally discharged on deck. D. The third officer activated the dry powder system by mistake.
Passage 22
During the watch the course steered，position and speed shall be checked at sufficiently frequent intervals，using any available navigational aids necessary，to ensure the ship follows the planned course.
The officer in charge of the navigational watch shall have full knowledge of the location and operation of all safety and navigational equipment on board the ship and shall be aware and take account of the operating limitations of such equipment.
The officer in charge of the navigational watch shall not be assigned or undertake any duties which would interfere with the safe navigation of the ship.
Officers of the navigational watch shall make the most effective use of all navigational equipment at their disposal.
When using radar，the officer in charge of the navigational watch shall bear in mind the necessity to comply at all times with the provisions on the use of radar contained in the International Regulations for Preventing Collisions at Sea，in force.
085.The purpose of checking the course steered，position and speed is ______. A. to steer the course
B. to ensure the at frequent intervals
C. to ensure the ship follows the planned course D. to use them safely
086.It is not necessary for the officer in charge of the navigational watch to be aware of ______those equipment on board.
A. the location of B. the operation of C. the amount of D. the limitations of 087.______means the power to be used freely.
A. At their disposal B. Taking account of
C. Interfering with D. The necessity to comply
088.When using radar，the officer in charge of the navigational watch shall act in accordance with______. A. the necessity to comply B. the COLREG
C. the effective use of the equipment
D. the provisions contained in the navigational regulatons
Passage 23
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，mariners 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 safeguard the cargo and the ship.
89 Weather information for ships is usually transmitted by coast radio stations ___.