An intermediate spring is ______.A.fitted in each leg of the towing bridleB.generally located between the “fishplate” and the main towing hawserC.secured at the “H” bittsD.usually made of manila hawser
An intermediate spring is ______.
A.fitted in each leg of the towing bridle
B.generally located between the “fishplate” and the main towing hawser
C.secured at the “H” bitts
D.usually made of manila hawser
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The family when they are having dinner together on the Spring Festival Eve.A. give each other the best wishes B. buy each other presentsC. sing, dance and play cards
An ocean towing bridle whose legs are of equal length,but too short,may ______.A.fail to provide spring in the hawserB.cause unequal distribution of the load to one legC.cause the bridle legs to jump clear of the chocks or fairleadsD.None of the above
The owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accomplish all of the following EXCEPT ______.A.evaluate the danger of each closing visual or radar contactB.adjust speed with due regard for the weather and visibilityC.reduce speed only where local speed limits are postedD.enter all required test and inspection results in the vessel's log or other record carried on board
A tug is best positioned for towing and maneuvering on rivers and other restricted waters where wave action is limited when ______.A.directly astern and pushing the towB.towing on a hawserC.towing alongside and parallel to the vessel it is towingD.towing on the hip
The minimum amount of lifesaving equipment required aboard an 85-foot uninspected towing vessel consists of ______.A.One approved flotation cushion for each person on boardB.One approved life preserver for each person on board and one life ringC.One approved inflatable vest for each person on boardD.Lifeboat capacity equal to 1 1/2 times the number of persons on board
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单选题When towing astern,increased catenary will().Aincrease control of the towBprevent the towing vessel from going in ironsCmake the towing vessel less maneuverableDreduce shock stress on the towing hawser
单选题When towing,what is the main reason for using a chain bridle on a wire hawser().AIt makes for an easy connectionBIt gives a spring effect to cushion the shockCIt eliminates the necessity of a swivelDIt does not chafe
单选题The owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accomplish all of the following EXCEPT().Aevaluate the danger of each closing visual or radar contactBadjust speed with due regard for the weather and visibilityCreduce speed only where local speed limits are postedDenter all required test and inspection results in the vessel's log or other record carried on board
单选题The owner or Master of a towing vessel shall ensure that all tests and inspections of gear take place and are logged().Aon each watch,immediately before being relievedBbefore embarking on a voyage of more than 24 hoursCdaily,at 1200 local zone timeDweekly,before 0000 Sunday
单选题What is the purpose of the intermediate spring?()AServes as a backup for the main tow hawser in case of failureBProvides weight and flexibility to the total tow makeupCLengthens the main tow hawser to keep the tow in stepDDistributes the towing load
单选题In astern towing,a tow span,also called the tow bar or towing arch,is used to().Ainsure that the hawser leads directly aft as it passes over the stern of the towing vesselBincrease the stability of the towing vessel by raising the hawser off the deckCreduce chafing of the towing hawserDprevent fouling of the hawser on deck gear located on the stern of the towing vessel
单选题An ocean towing bridle whose legs are of equal length,but too short,may().Afail to provide spring in the hawserBcause unequal distribution of the load to one legCcause the bridle legs to jump clear of the chocks or fairleadsDNone of the above
单选题If the towing bridle legs are not of equal length().Aexcessive strain is placed on the shorter legBthe shorter leg may failCthe longer leg is slackDAll of the above
单选题The MINIMUM acceptable size for a towing bridle would be that size in which the safe working load (SWL) of each leg of the bridle is equal to().Aone-half the SWL of the main towing hawserBthree-fourths the SWL of the main towing hawserCthat of the main towing hawserDtwice that of the main towing hawser
单选题Spring tides occur().Aat the start of spring,when the Sun is nearly over the equatorBonly when the Sun and Moon are on the same side of the Earth and nearly in lineCwhen the Sun and Moon are at approximately 90°to each other as seen from the EarthDwhen the Sun,Moon,and Earth are nearly in line,in any order
单选题A power-driven vessel,when towing astern,shall show().Atwo towing lights in a vertical lineBa towing light in a vertical line above the sternlightCtwo towing lights in addition to the sternlightDa small white light in lieu of the sternlight
单选题The minimum amount of lifesaving equipment required aboard an 85-foot uninspected towing vessel consists of().Aone approved flotation cushion for each person on boardBone approved life preserver for each person on board and one life ringCone approved inflatable vest for each person on boardDlifeboat capacity equal to 1 1/2 times the number of persons on board
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单选题There are three IS-IS routers on a Gigabit Ethernet segment: Router A, Router B, and Router C. Each router is configured in the same area and each routers Gigabit Ethernet interface is configured for Level 1-only. Router A is the Designated Intermediate System (DIS). Each routers IP address on that segment is: Router A: 10.1.1.1/24 Router B: 10.1.1.2/24 Router C: 10.2.2.1/26 Which statement is true about all the adjacencies that exist on that LAN?()ANo routers are adjacent with each other.BOnly Router A and Router B are adjacent at Level 1.COnly Router A and Router B are adjacent at Level 2.DAll three routers are adjacent with each other at Level 1.
单选题An intermediate spring is().Afitted in each leg of the towing bridleBgenerally located between the fishplate and the main towing hawserCsecured at the H bittsDusually made of manila hawser
单选题As seen from the tow,what should connect the leading ends of both towing bridle legs to the main towing hawser?()AA cable clampBA fishplate,flounder,or towing plateCA pad eyeDThe towing bitts