Most anchor handling equipment incorporates （） for mooring purposes.

A.a variable displacement axial piston pump
B.a constant displacement axial piston pump
C.a reciprocating piston pump
D.a centrifugal pump

A.Constant pressure system
B.Variable pressure system
C.Variable displacement system
D.Constant volume system

A.in the pert position
B.in the starboard position
C.in the neutral position
D.to be dismantled