All instruments that come into contact with the patient must be______before being used by others.
【正确答案】 A
【答案解析】解析：句意：这个病人接触过的任何器械在用于其他人之前必须得消毒。sterilize消毒，使无菌。label标记，标签。quarantine对…隔离检疫。retain保留；容纳。