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【多选题】
下列说法正确的是( )A.
电位值是相对的，参考点选取的不同，电路中各点的电位也将随之改变。
B.
电位值是绝对的，参考点选取的不同，电路中各点的电位不随之改变。
C.
电路中两点间的电压值是不固定的，会因参考点的不同而变， 即与零电位参考点的选取有关。
D.
电路中两点间的电压值是固定的，不会因参考点的不同而变， 即与零电位参考点的选取无关。
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