A.maximumB.negativeC.positiveD.zeroAt an angle of loll，……

单项选择题At all angles of inclination，the metacenter is（）.

A.vertically above the center of buoyancy
B.vertically above the center of gravity
C.at the intersection of the upright vertical centerline and the line of action of the buoyant force
D.at the geometric center of the underwater volume

单项选择题As a ship moves through the water，it causes a wake，which is also moving forward relative to the sea. In addition to a fore and aft motion，this wake also has a(n)（）.

A.downward and inward flow
B.downward and outward flow
C.upward and inward flow
D.upward and outward flow

单项选择题Angular motion about the vertical axis of a vessel is called（）.

A.yaw
B.surge
C.sway
D.roll

单项选择题Angular motion about the longitudinal axis of a vessel is known as（）.

A.pitch
B.surge
C.sway
D.roll

单项选择题All of the following can be determined by use of a stabilogauge EXCEPT（）.

A.metacentric height
B.mean draft
C.moment to trim one inch
D.deadweight