【判断题】计算机病毒的传播媒介来分类,可分为单机病毒和网络病毒。
【简答题】Unique to poultry, it is located above the cloaca and connected with the cloaca. Its main function is to produce B lymphocytes. The organ involved in humoral immunity is( ).
【单选题】采用( )方法可减少淬火钢中的残余奥氏体,稳定其尺寸。
【简答题】Unique to poultry, it is located above the cloaca and connected with the cloaca. Its main function is to produce B lymphocytes. The organ involved in humoral immunity is the( ).
【单选题】采用( )方法可减少淬火钢中的残余奥氏体。