Which stage of the follicle is marked by the surrounding of flattened (squamous) follicular cells becoming cuboidal?
A. Primordial follicle
B. Primary follicle
C. Secondary follicle
D. Mature follicle
粒黄体细胞主要分泌
A. 孕激素
B. 雌激素
C. 黄体生成素
D. 雄激素
Secondary follicle完成第二次减数分裂的时间是
A. 排卵时
B. 受精时
C. 排卵前36-48小时
D. 排卵后36-48小时
我国企业所得税的征收方式包括()。
A. 代扣代缴
B. 核定征收
C. 查账征收
D. 查验征收