单选题
当需要通过P6板M400组件(电源系统测试组件)面板上2个旋钮电门的设置读取相关电气参数时,首先需要确保:
A
M400面板上的测试口已经接好测试仪表
B
P6板上的M238(电源信号组件)上没有故障灯燃亮
C
将P5-13面板(AC和DC仪表面板)上的2个旋钮电门设置到“TEST”位置
D
无需要额外准备,直接选择设置两的旋钮电门即可
答案解析
正确答案:C
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