A.90mmHg B.80mmHg C.60mmHg D.50mmHg
A.0.23~0.35 B.0.33~0.45 C.0.43~0.55 D.0.55~0.65
A.右心房 B.上腔靜脈 C.右心室 D.肺動(dòng)脈