单项选择题

A.PaO2<8.6kPa(65mmHg)和(或)伴有PaCO2>7.3kPa(55mmHg)
B.PaO2<6.7kPa(50mmHg)和(或)伴有PaCO2>8.0kPa(60mmHg)
C.PaO2<8.0kPa(60mmHg)和(或)伴有PaCO2>7.3kPa(55mmHg)
D.PaO2<8.0kPa(60mmHg)和(或)伴有PaCO2>6.7kPa(50mmHg)
E.PaO2<8.6kPa(65mmHg)和(或)伴有PaCO2>6.7kPa(50mmHg)