( )就是依据生物指标,通过对小型动物试验观察来进行检验的方法。
A.理化鉴定法
B.生物鉴定法
C.感观鉴定法
D.综合鉴定法
参考答案:B
青春期后双侧隐睾后果为()
A.恶变为睾丸肿瘤
B.双睾丸萎缩导致男性内分泌不足
C.丧失生育能力
D.睾丸松解固定术后尚能恢复正常生育能力
E.影响第二性征
Computer systems consist of two very different types of elements: Hardware, which includes all the physical things that can be touched and ______, which tells the hardware how to do.
A.Operating system
B.I/O devices
C.Courseware
D.Software