截至2009年12月31日，北京市除农户和个体工商户以外，共有法人单位246767个

为了比较几个小型幼儿园群体儿童身高、体重发育水平孰高孰低，应该采用（）以相互比较。

A.性别年龄别身高体重均值

B.身高体重大于标准均值的人数及其百分比

C.身高体重上中下等的人数及百分比

D.身高体重大于P50的人数及其百分比

E.身高体重小于P3和大于P97的人数及百分比

.松鼠妈妈采松子，晴天每天可采20个，雨天每天可采12个，平均每天采14个，这几天中雨天有6天．问共采了多少天？用方程解．

（）在统计法律体系中具有最高的法律效力

A.法律

B.地方性法规

C.政府规章

D.行政法规

I’d like to talk about (1) in England and Wales, and in England and Wales there are (2) of council. For instance, if I could take the example of Oxfordshire, there is (3) where they are responsible for education, (4) , structure planning, highways, (5) , and so on. And there are (6) district councils, again in Oxfordshire, and they are (7) , in particular council housing, for local plans, for (8) , environment health, and they’re also responsible for (9) , and in Oxford, for instance, they are building an ice-rink (10) of the city.
If we could (11) the question of education, I think this would (12) of local government in the (13) . First of all, there is a minister at (14) level. He is the (15) for Education and he’s responsible for running a (16) education system in the (17) . But (18) there is a lot of local control. So the local councils, (19) such as Oxfordshire County Council, actually run the schools and colleges in their (20) .

某顾客持信用卡到油站加油1000元，为完成其信用卡的消费任务，该顾客要求收款员分开4笔刷卡，每笔250元。收款员应如何操作：（）。

A、按客户要求刷

B、耐心向客户解释，只刷一笔

C、择中刷三笔

D、刷两笔，每笔500元