A.has the full force of the regular Certificate of Inspection
B.expires six months after it is issued
C.must be exchanged for a regular Certificate of Inspection within 3 months
D.is retained in the custody of the Master

A.rotor blades and landing gear
B.unloading of passengers
C.loading of cargo
D.pilot's visibility

A.increasing the righting moment
B.decreasing the vessel's displacement
C.increasing the reserve buoyancy
D.shifting the CG (center of gravity) off center

A.loss of life
B.an injury requiring only first aid
C.$(SA)10，000 in property damage
D.loss of equipment which doesn't reduce the vessel's maneuverability

A.Appendicitis
B.Cholera
C.Plague
D.Typhus fever

A.drill stem guide
B.guide frame
C.drill string frame
D.casing guide

A.heavy-walled drill pipe
B.tool joint
C.down hole tool
D.drill collar

A.vernier
B.psychrometer
C.hygrometer
D.stadimeter

A.with
B.has
C.have
D.had

A.turn off all lights that interfere with the navigation lights
B.turn on all available working lights on deck
C.ring the bell rapidly for five seconds once a minute
D.display two black diamonds in a vertical line during the day

A.three barrels
B.four barrels
C.six barrels
D.eight barrels