金刚石结构中,存在X光反射消光现象的衍射面指数为( )
A. (341)
B. (201)
C. (111)
D. (204)
能带理论解释固体导电的基本观点为( )
A. 满带中的电子不导电
B. 不满带中的电子对导电有贡献
C. 空带不导电
D. 价带不导电
People who have inherited a low rate will gain weight.
A. cardiac
B. respiratory
C. secretory
D. metabolic
________is the color body or substance that carries genetic features from parents to children.
A. Centrosome
B. Ribosome
Chromosome
D. Chromatin