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單項選擇題

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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單項選擇題

A semisubmersible with a positive GM，and TCG located starboard of the centerline，inclines to an angle of（）.

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

單項選擇題

A semisubmersible with a negative GM flops to an angle of（）.

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

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