下列各因子中何者参与抗菌的特异性免疫() ["白细胞素","胃酸","CTL","乳素","铁螯合剂"]
下列细菌中产生神经毒素的有() ["霍乱弧菌","铜绿假单胞菌","结核分枝杆菌","破伤风梭菌","肠侵袭性大肠杆菌"]
蒸馏酒的酒度,最高可达()。 ["55%(v/v)","68%(v/v)","75%(v/v)","78%(v/v)"]
用小鼠研究乙型脑炎病毒的致病性,常用接种途径是() ["肌肉","脑内","腹腔","鼻内","静脉"]
汽化酒精是将酿酒的原料经过发酵后加温至一定温度,并保持这个温度就可以获得,因此要获得汽化酒精就要将酿酒的原料加温至()。 ["65.3℃","68.5℃","78.3℃","78.5℃"]
绝缘预防性试验有哪几类?各有什么特点?