For an upright vessel, draft is the vertical distance between the keel and the （）.

A . apparent wind speed only B . true wind speed and true wind direction C . true wind speed only D . apparent wind speed and true wind directio

A . Use the CO system and evacuate the engine room B . Use the fire main system and evacuate the engine room C . Evacuate the engine room and use the CO system D . Evacuate the engine room and use the fire main system

A . 3 litres of water B . 1 unit of provisions C . 1 seasickness kit D . 1 life preserver

A . 12 months B . 15 months C . 17 months D . 18 month

A . discharge B . recircle C . load D . take i

A . lower than the center of gravity B . at the same height as the center of gravity C . higher than the baseline D . on the longitudinal centerline

A . waterline B . freeboard deck C . plimsoll mark D . amidships sectio

A . Use the C0 system and evacuate the engine room B . Use the fire main system and evacuate the engine room C . Evacuate the engine room and use the C0 system D . Evacuate the engine room and use the fire main system

A . discharging B . recircling C . loading D . taking i

A . I require a pilot B . Longitude follows C . I am going ahead; follow me D . Do not follow me

A . Certificate of Documentation B . Certificate of Inspection C . Operators Merchant Marine license D . FCC Station License

A . testing all alarm and detection systems B . breaking out and using the vessel's emergency equipment C . participation by selected crew members D . one person putting on protective clothing，if the vessel is so equipped

A . discharging B . recircling C . loading D . taking i

A . the towing vessel should slip first B . the vessel towed should slip first C . they should slip simultaneously D . either vessel may slip first

A . make a lee B . take a lee C . get a lee D . have a lee

A . discharging B . recircling C . loading D . taking i

A . lower than the center of gravity B . at the same height as the center of gravity C . heigher than the baseline D . on the longitudinal centerline

A . On top of No.1 hatch B . Beside the hatches，forward of the midships house C . On top of the hatch immediately forward of the midships house D . On top of the hatch immediately aft of the midships house

A . list to stabilize at an angle of loll B . trim to stabilize at an angle of loll C . trim to increase D . trim to decrease

A . it exceeds 3 years from date of issue B . an alteration approved by the Captain of the Port is made C . an intermediate survey has not be conducted within 12 months from the date that the IOPP was issued D . the vessel is transferred to the flag of another country

A . A．DDU　　 B . B．FCA C . C．FOB　　 D . D．CIF

A . blood B . breath C . urine D . All of the above

A.testing all alarm and detection systems B.breaking out and using the vessel's emergency equipment C.participation by selected crew members D.one person putting on protective clothing，if the vessel is so equipped

Sufficient buoyancy （浮力）to support the wearer should be retained by the life preserver after 48 hours in the water, and it should be reliable even after long period of storage.Thus it should be made of materials resistant to sunlight, gasoline, and oils, and it should be not easily set on fire.The position in which the life preserver will support a person who jumps or falls into the water is most important, as is its tendency to turn the wearer in the water from a face-down position to an upright or slightly backward position, with his face clear of the water, even when the wearer is exhausted or unconscious. The method of adjustment to the body should be simple, and self-evident to uninitiated persons even in the dark under the confused conditions, which follow a disaster.Thus, the life preserver should be reversible that it is nearly impossible to get it on wrong.Catches, straps, and ties should be kept to a minimum.In addition, the life preserver must be adjustable to the wide variety of shapes and sizes of wearers, since this greatly affects the position of floating and the self-righting qualities.A suitable life preserver should also be comfortable to wear at all times, in and out of the water, not so heavy as to encourage to take it off on shipboard while the ship is in danger, nor so burdensome that it hinders a person in the water while trying to swim. 1.The passage is mainly about（）. A.the uses of life preservers B.the design of life preservers C.the materials for life preservers D.the buoyancy of life preservers 2.According to the passage, a life preserver should be first of all （）. A.adjustableB.comfortableC.self-evidentD.self-righting 3.United States Coast Guard does NOT require the life preserver to be made （）. A.with as few strings as possible B.capable of being worn on both sides C.according to each wearer's size D.comfortable and light to wear 4.By “the uninitiated individual” （Para）1, Line.4.the author refers to the person （）. A.who has not been instructed how to use a life preserver B.who has a little experience in using a life preserver C.who uses a life preserver without permission D.who becomes nervous before a disaster 5.What would happen if a person were supported by the life preserver in a wrong position？ A.The waves would move him backwards. B.The water would choke him. C.He would immediately sink to the bottom. D.He would be exhausted or unconscious.