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材料：
The Port of London comprises the 147km of the tidal River Thames，and the enclosed dock system at Tilbury．The limits of the port are from Teddington to those territorial waters within a limit as follows：from Foulness Point（Essex）to Gunfleet old lighthouse to 51°26′36′′N，01°25′30′′E to Warden Point（Kent），excluded is any part of the port as defined in the Medway Ports Reorganisation Scheme 1968；River Lea or Bow Creek within the jurisdiction of the British Waterways Board；The Grand Union Canal and Regents Canal Dock．For London District River Pilots the upper limit is London Bridge and the down river limit is just below Gravesend.
For the London District Sea Pilots the upriver limit is an imaginary line from the Sealink ferry pier at Gravesend to Tilbury Passenger Landing Stage and the lower limit is a line running from Felixstowe across the mouth of the Thames outside the GOODwin Sands to Folkestone．
The Thames Barrier，built for the Greater London Council at Woolwich Reach to afford protection against tidal floods is now under control of the Thames Water Authority．It allows shipping to and from the upper areas of the Port of London to pass without restriction during periods of non-surge conditions．
Spanning 520m across the river，it comprises ten rising sector gates，of which four main gates for navigation have a width of 61m and two subsidiary gates have a width of 35m．
问题：
________ does not belong to the Port of London．
A.River Lea or Bow Creek within the jurisdiction of the British Waterways Board
B.The Grand Union Canal and Regents Canal Dock
C.from Foulness Point（Essex）to Gunfleet old lighthouse to 51°26′36′′N，01°25′30′′E to Warden Point（Kent）
D.any part of the port as defined in the Medway Ports Reorganisation Scheme 1968
For the London District Sea Pilots the upriver limit is ________．A.London Bridge
B.just below Gravesend
C.an imaginary line from the Sealink ferry pier at Gravesend to Tilbury Passenger Landing Stage
D.a line running from Felixstowe across the mouth of the Thames outside the GOODwin Sands to Folkestone
________ is spanning 520m across the river，comprising ten rising sector gates，of which four main gates for navigation have a width of 61m and two subsidiary gates have a width of 35m．A.The Thames Barrier
B.Felixstowe across the mouth of the Thames
C.Woolwich Reach
D.Thames Water
This passage is most likely extracted from ________．A.Guide to Port Entry
B.Notices to Mariners
C.Attachment to a Charter Party
D.Ocean Passage
请帮忙给出每个问题的正确答案和分析，谢谢！
参考答案
更多 “ 材料：The Port of London comprises the 147km of the tidal River Thames，and the enclosed dock system at Tilbury．The limits of the port are from Teddington to those territorial waters within a limit as follows：from Foulness Point（Essex）to Gunfleet old lighthouse to 51°26′36′′N，01°25′30′′E to Warden Point（Kent），excluded is any part of the port as defined in the Medway Ports Reorganisation Scheme 1968；River Lea or Bow Creek within the jurisdiction of the British Waterways Board；The Grand Union Canal and Regents Canal Dock．For London District River Pilots the upper limit is London Bridge and the down river limit is just below Gravesend.For the London District Sea Pilots the upriver limit is an imaginary line from the Sealink ferry pier at Gravesend to Tilbury Passenger Landing Stage and the lower limit is a line running from Felixstowe across the mouth of the Thames outside the GOODwin Sands to Folkestone．The Thames Barrier，built for the Greater London Council at Woolwich Reach to afford protection against tidal floods is now under control of the Thames Water Authority．It allows shipping to and from the upper areas of the Port of London to pass without restriction during periods of non-surge conditions．Spanning 520m across the river，it comprises ten rising sector gates，of which four main gates for navigation have a width of 61m and two subsidiary gates have a width of 35m．问题：________ does not belong to the Port of London．A.River Lea or Bow Creek within the jurisdiction of the British Waterways BoardB.The Grand Union Canal and Regents Canal DockC.from Foulness Point（Essex）to Gunfleet old lighthouse to 51°26′36′′N，01°25′30′′E to Warden Point（Kent）D.any part of the port as defined in the Medway Ports Reorganisation Scheme 1968For the London District Sea Pilots the upriver limit is ________．A.London BridgeB.just below GravesendC.an imaginary line from the Sealink ferry pier at Gravesend to Tilbury Passenger Landing StageD.a line running from Felixstowe across the mouth of the Thames outside the GOODwin Sands to Folkestone________ is spanning 520m across the river，comprising ten rising sector gates，of which four main gates for navigation have a width of 61m and two subsidiary gates have a width of 35m．A.The Thames BarrierB.Felixstowe across the mouth of the ThamesC.Woolwich ReachD.Thames WaterThis passage is most likely extracted from ________．A.Guide to Port EntryB.Notices to MarinersC.Attachment to a Charter PartyD.Ocean Passage请帮忙给出每个问题的正确答案和分析，谢谢！ ” 相关考题
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To prevent unauthorized Telnet access to a switch port.B
To limit the number of Layer 2 broadcasts on a particular switch port.C
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单选题While your vessel is docked port side to a wharf，a sudden gale force wind causes the vessel’s stern lines to part. The stern begins to fall away from the dock，and no tugs are immediately available. Which measure(s) should you take FIRST?（）A
Notify the engineroom of the need for propulsionB
Shut down any cargo transfer that's in progressC
Let go the port anchor and veer to a short scope of chainD
Obtain assistance from the terminal to put new stern lines out
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单选题A vessel proceeding to London，England，from New York makes an unscheduled call at the port of Hamilton，Bermuda. What term is used to denote the voluntary departure from the usual course? （）A
AlterationB
DeviationC
LibertyD
Unscheduled stop
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bearingsB
distancesC
sectionsD
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单选题（）means a plan developed to ensure the application of measures designed to protect the port facility and ships, persons, cargo, cargo transport units and ships stores within the port facility from the risks of a security incident.A
Ship security planB
Company security planC
Port facility security planD
National security plan
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单选题Charted depth is the（）.A
vertical distance from the tidal datum to the ocean bottom plus the height of the tideB
vertical distance from the tidal datum to the ocean bottomC
average height of water over a specified period of timeD
average height of all low waters at a place
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