單項(xiàng)選擇題

To prevent the riser system from buckling under its own weight，upward tension is provided by the（）.

A.riser stabilizers
B.guideline tensioning system
C.riser tensioning system
D.guideline stabilizers

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單項(xiàng)選擇題

To（）sanitary water from any vessel，an application shall be made to Harbor Authorities for approval.

A.discharge
B.recircle
C.load
D.take in

單項(xiàng)選擇題

These weights are（）the ship’s discharging facilities．

A.out
B.beyond
C.from
D.off