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單項選擇題

（）lashing bar needs renewing.

A. The lost
B. The used
C. The deformed
D. The small

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單項選擇題

Four （）are needed to work this heavy derrick.

A.winches
B.gears
C.windlass
D.cranes

單項選擇題

This （）was repaired in Singapore.

A. damaged derrick
B. damaging derrick
C. derrick to be damaged
D. derrick