單項(xiàng)選擇題

The equipment is very old．It’s not worth（）.

A.repairing
B.to repair
C.repair
D.to be repaired

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單項(xiàng)選擇題

The deck control valve to be（）after being repaired.

A.moved and fitted again
B.removed and refitted
C.reproduced and put on again
D.returned and attached again

單項(xiàng)選擇題

The damaged derrick（）now.

A.has repaired
B.is being repaired
C.is repaired
D.will be repaired