建设项目竣工后，( )应当向审批该建设项目环境影响报告书的环保行政主管部门申请验收。
A．建设单位
B．设计单位
C．监理单位
D．施工单位
参考答案：A
大多数成人血红蛋白中珠蛋白组成（）。
A.α2ε2
B.α2ψ2
C.α2γ2
D.α2β2
E.α2δ2
For a group of n people, k of whom are of the same sex, the expression yields an index for a certain phenomenon in group dynamics for members of that sex. For a group that, consists of 20 people, 4 of whom are females, by how much does the index for the females exceed the index for the males in the group ？（）
yields an index for a certain phenomenon in group dynamics for members of that sex. For a group that, consists of 20 people, 4 of whom are females, by how much does the index for the females exceed the index for the males in the group ？（）