下图为某二倍体生物精原细胞分裂过程中,细胞内的同源染色体对数的变化曲线。基因重组最可能发生在
A.AB段
B.CD段
C.FG段
D.HI段
答案:C
实际放大电路常采用分压式偏置电路,这是因为它的输入阻抗大。()
The major technical areas of computer security are usually represented by the initials CIA: (66) , integrity, and authentication or availability.
A.confidentiality
B.confident
C.secret
D.safety