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單項選擇題

The winch is liable（）worn-out in this way.

A.getting
B.to get
C.to have got
D.for getting

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There are 65（）of grade No.3 rubber short.

A.bags
B.bales
C.sacks
D.cases

單項選擇題

There are salvage operations（）position 120.0N, 12.5E.

A.on
B.at
C.in
D.above

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