Reserve buoyancy is the（）.

A . Bandwidth that is reserved for SVCs to route over a trunk B . Bandwidth that is reserved on a trunk so that ABR connections can burst C . Bandwidth on a trunk that is reserved for control traffic and cannot be used by connections D . Bandwidth that cannot be allocated to connections but can be used to accommodate statistical variations in the traffic

A . ip rsvp bandwidth 100000 1000 B . ip rsvp bandwidth 100000 1 C . ip rsvp bandwidth 10 1 D . ip rsvp bandwidth 1000000 1000

A . ip rsvp bandwidth 10000 1000 B . ip rsvp bandwidth 100000 1 C . ip rsvp bandwidth 10 1 D . ip rsvp bandwidth 1000000 1000

A . center of gravity B . metacenter C . center of flotation D . keel

A . Discharging weight from lower decks B . Loading weight in upper decks C . Shifting weight from lower to upper decks D . Shifting weight from upper to lower deck

A . submerged hulls B . quarters C . columns and upper structure D . submerged connecting structure

A . move to port B . move to starboard C . move directly down D . stay in the same positio

A . While the ship is at sea，there must be available at all times a supply of electrical energy sufficient to operate the radio installations and to charge any batteries used as part of a reserve source of energy B . Both the VHF and MF/HF installations must be simultaneously supplied C . A means of ensuring a continuous supply of electrical power must be provided to all GMDSS equipment that could be affected by an interruption in power D . If a UPS or equivalent is used to supply power to the ship's GPS receiver or other source of positional information，a means must be provided to ensure the continuous supply of the information in the event of a failure to the ship's main or emergency source of power

A . increase the ttrim B . increase ship stability C . cause a serious list D . decrease the heeling moment

A . metacenter B . geometric center of the waterplane area C . center of gravity D . center of flotatio

A . center of gravity B . amidships station C . center of flotation D . geometric center of the waterplane area

A . only when there is positive stability B . only when there is negative stability C . only when there is neutral stability D . at all time

A . the volume of all intact spaces above the waterline B . an intact space below the surface of a flooded area C . an intact space which can be flooded without causing a ship to sink D . the space at which all the vertical upward forces of buoyancy are considered to be concentrated

A . only when there is positive stability B . only when there is negative stability C . only when there is neutral stability D . at all time

A . move to port B . move to starboard C . move directly down D . stay in the positio

A . center of gravity B . center of flotation C . metacenter D . metacentric height

A . The amount of buoyancy measured in foot/tons B . The vertical distance above the waterline inside the hull C . The volune of space that is filled with water D . The volume of intact space above the waterline

A．Lower than 1%. B．A little bit higher than its target rate. C．Quite large room left to further cutting. D．Higher than 1%.

A．Chicago B．Cleveland C．New York D．Washington, D.C.