A.对
B.错
[单选题]A.3B.-3C.±3D.0E.1
[单选题]A.3B.-3C.±3D.0E.1
[单选题]A.20.33%B.40.92%C.60%D.86.81%E.91.2%
[单选题]A.1~2B.2~3C.3~4D.4~5E.5~6
[单选题]A.20.33%B.40.92%C.60%D.86.81%E.91.2%
[单选题]A.0.3~0.5mmB.0.6~0.7mmC.0.8~1.0mmD.1.2~1.5mmE.1.5mm以上
[单选题]A.高位脊麻B.低位脊麻C.高位硬膜外阻滞D.低位硬膜外阻滞E.鞍麻