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• The system administrator mirrored the rootvg from hdisk0 to hdisk1 and needs to ensure the system would boot from hdisk1 if hdisk0 failed. Which of the following commands would be used to accomplish this？（）

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• The drive motor will have a brake arranged to fail-safe, i√eit will （） the load if power fails or machine is stopped.

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• If an obligatory duty payer fails to fulfill his duty payment obligation, the bank issuing a letter of duty guarantee for him has the obligation to pay the duty.（)

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