使用止血带止血时,应注意
A.扎止血带时间不宜>2h,每30mn松带一次,间歇30s-1mn B.扎止血带时间不宜>1h,每30mn松带一次,间歇30s-1mn C.扎止血带时间不宜>1h,每30mn松带一次,间歇30mn-1h D.扎止血带时间不宜>30mn,每1h松带一次,间歇30s-1mn E.扎止血带时间不宜>2h,每1h松带一次,间歇30s-1mn正确答案B
使用止血带止血时,应注意
A.扎止血带时间不宜>2h,每30mn松带一次,间歇30s-1mn B.扎止血带时间不宜>1h,每30mn松带一次,间歇30s-1mn C.扎止血带时间不宜>1h,每30mn松带一次,间歇30mn-1h D.扎止血带时间不宜>30mn,每1h松带一次,间歇30s-1mn E.扎止血带时间不宜>2h,每1h松带一次,间歇30s-1mn正确答案B