單項(xiàng)選擇題A series of trays with sieves that vibrate to remove cuttings from the circulating fluid in rotary drilling operations is called the().

A.shale shaker
B.settling pit
C.desilter
D.desander


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2.單項(xiàng)選擇題A semisubmersible with a negative GM flops to an angle of().

A.heel
B.trim
C.list
D.loll

3.單項(xiàng)選擇題A semisubmersible which flops between forward and aft angles of trim is likely to have().

A.KML less than KGL
B.an off-center LCG
C.LCG greater than LCB
D.KML greater than KMT

4.單項(xiàng)選擇題A semisubmersible rig under tow should be ballasted down if().

A.motion begins to be excessive
B.water begins to break over the pontoons
C.period of roll exceeds 12 seconds
D.forward progress is halted by head wind

5.單項(xiàng)選擇題A seaman you have just discharged has a Continuous Discharge Book. Which statement is TRUE? ()

A.The record of entry in the continuous discharge book shall agree with the entry made in the Ship's Articles.
B.If the vessel was on coastwise articles,the record of discharge will be made in the Official Logbook.
C.An entry should be made in the book and a Certificate of Discharge issued to the seaman.
D.A Certificate of Discharge form should be attached to the book