题目内容
某电气原理图的电源引入线没有标号，请你帮它标上标号 （ ）
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某工程师助理小李在绘制电气原理图时，电路全部用一样粗线绘制，遭到工程师的严厉批评，他应该把辅助电路用（ ）线绘在图面的右侧或下方
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