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【单选题】
符合左心室高电压的心电图表现是（）。A.
R 1 >1.2mV
B.
R V5 ＋S V1 >3.0mV
C.
R avL >0.8mV
D.
R V5 >2.0mV
E.
R aVF >2.0mV
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