Put all the power switches and electrical switches in the "off" position, check whether the power supply has reached the requirements and the chassis of the machine grounding reliability.
将所有电源开关及电器开关置于“关”位置，检查电源是否合乎要求，机壳接地是否可靠。
Good, the tower has been on its position, check its perpendicularity.
好了！该塔已就位了，检查一下它的垂直度。
Good, the tower has been on its position, check its perpendicularity.
好了！该塔已就位了，检查一下它的垂直度。
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