【名词&注释】
冷冻干燥(freeze-drying)、传染源(source of infection)、褐家鼠(norway rat)、螺旋体(spirochete)、补体成分(components of complement)、先天性卵巢发育不全综合征
[单选题]补体成分(components of complement)灭活的标准温度和时间是
A. 0℃,24h B. 4℃,2h C. 37℃,30min D. 56℃,30min E. 100℃,15min