stability at all angles of inclination
initial stability
stability at angles less than the limit of positive stability
stability at angles less than the downflooding angle
第1题：
A hand held instrument used to measure distances between objects and the ship is a ______.
A.vernier
B.psychrometer
C.hygrometer
D.stadimeter
第2题：
A check line is ______．
A.A safety line attached to a man working over the side
B.Used to measure water depth
C.Used to slow the headway of a barge
D.Used to measure the overhead height of a bridge
第3题：
Charted depth is the ______.
A.vertical distance from the chart sounding datum to the ocean bottom，plus the height of tide
B.vertical distance from the chart sounding datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
第4题：
For a vessel inclined by the wind, multiplying the buoyant force by the horizontal distance between the lines of action of the buoyant and gravity forces gives the ______.
A.righting moment
B.longitudinal moment
C.transverse moment
D.vertical moment
第5题：
Air gap is the vertical distance between the bottom of the hull and the ______．
A.Still water level
B.Wave crest
C.Wave crest plus the charted water depth and tidal corrections
D.Wave crest plus the charted water depth and tidal correction and storm surge
第6题：
A sling psychrometer is a(n) ______.
A.type of cargo gear
B.instrument used in celestial navigation
C.instrument used to measure relative humidity
D.instrument used to measure specific gravity
第7题：
Which statement concerning current is TRUE ________．
A.Current can be determined by measuring the direction and distance between simultaneous EP and DR positions
B.The drift of the current should be averaged out on a one hour basis
C.After the current is determined，it should not be used for further plotting because it is an unknown variable
D.The distance between a simultaneous DR position and fix is equal to the drift of the current
第8题：
Charted depth is the ______.
A.vertical distance from the tidal datum to the ocean bottom plus the height of the tide
B.vertical distance from the tidal datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
第9题：
An aneroid barometer is an instrument ______.
A.used to measure the speed of wind
B.in which the pressure of air is measured
C.that tells which direction a storm is coming from
D.used to measure the height of waves
第10题：
For an upright vessel, draft is the vertical distance between the keel and the ______.
A.waterline
B.freeboard deck
C.plimsoll mark
D.amidships section