單項(xiàng)選擇題In most cases,when a large merchant vessel enters shallow water at high speed the().

A.maneuverability will increase
B.speed will increase
C.bow will squat farther than the stern
D.vessel will rise slightly,on a level plane


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1.單項(xiàng)選擇題If the situation arose where it became necessary to tow a disabled vessel,which statement is TRUE concerning the towing line?().

A.The towing line between the two vessels should be clear of the water
B.The towing line should be taut at all times between the vessels
C.There should be a catenary so the line dips into the water
D.None of the above

2.單項(xiàng)選擇題If a tow sinks in shallow water,you should().

A.release it immediately
B.attempt to beach it before it goes under
C.pay out cable until it's on the bottom and place a buoy on the upper end
D.shorten cable to keep it off the bottom

3.單項(xiàng)選擇題Ice blink is().

A.the dark appearance of the underside of a cloud layer due to reflection of a surface of open water
B.the soft light appearance on the underside of a cloud layer due to reflection from a surface of open water
C.the yellowish-white glare on the underside of a cloud layer
D.water sky

4.單項(xiàng)選擇題For operations in pack ice,a vessel should().

A.be on an even keel
B.be trimmed slightly by the head
C.have a drag of not more than 60 - 90 centimeters
D.be ballasted so the forefoot is near the surface

5.單項(xiàng)選擇題Before entering an ice area,the ship should be().

A.either trimmed by the head or the stern
B.on an even keel
C.trimmed down by the head
D.trimmed down by the stern

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A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? ()

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On a twin-screw,twin-rudder vessel,the most effective way to turn in your own water,with no way on,is to put().

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If the situation arose where it became necessary to tow a disabled vessel,which statement is TRUE concerning the towing line?().

題型:?jiǎn)雾?xiàng)選擇題

The proximity of pack ice may be indicated by().

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A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the ()limit of the channel or fairway which lies on her()side as is safe and practicable.

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A vessel the passage of which is not to be impeded()to comply with this Rule when the two vessels are approaching one another so as to involve risk of collision.

題型:?jiǎn)雾?xiàng)選擇題

Topside icing decreases vessel stability becauseit increases().

題型:?jiǎn)雾?xiàng)選擇題

Ice blink is().

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When pushing ahead,wires leading from the quarters of the after outboard barges to the bow of a towboat().

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A towing vessel should be on the crest of a wave at the same time as its tow and in the trough at the same time. The term used to describe this is().

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