The engine should be running.
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A ground should be established before opening the filling hole.
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A ground should be broken right before opening the filling hole.
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The filling hole should be locked during loading.
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The engine should be running.
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A ground should be established before opening the filling hole.
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A ground should be broken right before opening the filling hole.
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The filling hole should be locked during loading.
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Answer correctly : 0 | Wrong : 0
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