The center of flotation of a vessel is（）.

A . It is inflated by a small CO bottle that is automatically tripped when the front zipper is at the top of the zipper track B . It is inflated by a small CO bottle that is manually tripped C . It is inflated by blowing through an inflation tube D . It inflates by sea water bleeding into the flotation bladder and reacting with a chemical therei

A .  Server-to-server traffic always remains in the core layer. B .  The recommended practice is for the core infrastructure to be in Layer 3. C .  The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer. D .  The Cisco Express Forwarding hashing algorithm is the default， based on the IP address andLayer 4 port. E .  Core layer should run BGP along with an IGP because iBGP has a lower administrativedistance than any IGP.

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

A . increase the capacity of the coil B . increase the superheat at the bulb C . deliver more refrigerant to the coil D . decrease the capacity of the coil

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 . center of buoyancy B . center of gravity C . metacenter D . center of flotatio

A . only after two hours in the water B . only after four hours in the water C . before entry into the water D . upon entry into the water

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

A . aft perpendicular B . center of buoyancy C . keel D . center of flotatio

A . change, depending on the location of the LCG B . increase C . decrease D . remain constant

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 . 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 . about which the vessel lists and trims B . which coincides with the center of buoyancy C . which，in the absence of external forces，is always vertically aligned with the center of gravity D . which is shown in the hydrostatic tables as VCB

A . center of buoyancy B . center of flotation C . center of gravity D . tipping center

A . water depth B . keel C . center of flotation D . center of buoyancy

A . center of buoyancy B . center of flotation C . uncorrected height of the center of gravity of the vessel D . center of gravity of the vessel corrected for free surface effect

A . metacentric height B . height of the righting arm C . fore and aft perpendicular D . height of the center of buoyancy

A . metacenter B . amidships C . center of flotation D . geometric center of the displaced volume

A．center: vertices: B．center: vertices: C．center: vertices: D．center: vertices: E．center: vertices:

A．physical B．psychological C．professional D．sociological

A．A.dispossessed on B．B.discarded with C．C.derived from D．D.deprived af