单项选择题
A.50mmHg B.60mmHg C.70mmHg D.75mmHg
A.12-32mmHg B.12-30mmHg C.15-30mmHg D.30-60mmHg
A.缺血性坏死 B.骨外露 C.深部组织溃疡 D.表浅溃疡