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【多选题】
三相桥式整流电路,其谐波情况,描述正确的是
A.
整流输出电压中含有6k（k＝1、2、3……）次的谐波。
B.
变压器二次侧电流中含有6k±1(k=1、2、3……)次的谐波
C.
整流输出电压的谐波中，幅值最大的是6次谐波。
D.
变压器二次侧电流中的主要谐波，是5、7次谐波。
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