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A user complains that the network printer is not printing. The system administrator knows there is a print queue for the network printer and needs to check on the queue. Which command is run?()

A. netstat
B. lpstat
C. telinit
D. prtconf&e

当测量滤失量时间到时,应立即做些什么?

要改变同步发电机的频率,则必须调整()。

A. 励磁电流
B. 原动机的转速
C. 负载的性质
D. 输出电流

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