急性HBV感染早期,HBV复制活跃() ["A","B","C","D","E"]
男,25岁。肠梗阻已半月,近日来恶心、呕吐加重,视力模糊,双下肢肌肉抽搐频繁。体检:神智欠清,脉细数,血压75/53mmHg,血清钠117mmol/L,血清钾3.6mmol/L。接下来静脉滴注() ["5%氯化钠溶液200~300ml","多巴胺","氢化可的松","氯化钾","0.9%氯化钠溶液200~300ml"]
文学典型是一种以独特的个别去显现普遍性的人物或事物的形象。其特征主要表现为历史性、感染性、多义性() ["特殊性","指意性","随意性","独创性"]
感受器电位(receptor potential)
晶体管的特征频率是指当工作频率增高,使β下降至()时的频率。 ["低频电流放大系数的

倍时","低频电流放大系数的1\/2倍时","1","0"]
简述卵裂的几种方式?