2005年7月21日,中国人民银行公布的人民币兑美元的中间汇率为USD1=CNY8.11;2010年8月18日,人民币兑美元的中间汇率为USD1=CNY6.7895。分别计算美元和人民币的变动幅度。
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You set up scheduled tasks to run and notify you of any failures. 3 days later you see that none of the tasks ran and you received no notifications. What should you do?()
A. Set the schedule service to run under the administrator account.
B. Set the scheduled tasks to run under the administrator account.
C. Enable the messenger service
D. Set the schedule service to run under the local system account and set it to start automatically.