Used until the end of the Second World War, the German army employed the U-boat to attack both military or civilian watercraft.
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Athe German army employed the U-boat to attack both military or
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Bthe U-boat was employed by the German army to attack both military and
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Cthe U-boat employed the German army to attack both military or
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Dthe German army had employed the U-Boat to attack both military and the
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Ethe U-boat has been employed by the German army to attack both military and also
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显示答案
正确答案: B