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單項選擇題

This new method not only saves time but also saves energy（）operating on two batteries instead of four.

A.in
B.by
C.on
D.for

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單項選擇題

This Rule does not relieve the give-way vessel（）her obligation to keep out of the way.

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

單項選擇題

This system is only applicable（）those ships which are anchored at the roadstead waiting for entry.

A.to
B.for
C.with
D.on

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