建立实体-联系模型的一般步骤是（）①确定实体②设计出E-R图③确定实体之间联系④确定

激光器一般由三个主要部分构成：工作物质、激发装置和光学谐振腔。 下列叙述正确的是（）

A.光学谐振腔是在工作物质两端安装的一对互相垂直的反射镜

B.谐振腔能起选频作用

C.平行于主轴

D.为全反射镜

E.使受激辐射能在有限体积的工作物质中快速终止

五位母亲Betty, Sara, Gina, Mary和 Alice打算为各自的孩子选择一所合适的学校。请仔细阅读第1-5 题中的个人情况说明，从A到F的六个选项中，选出符合各人要求的最佳选项，其中一项为多余选项。

( )1. Betty has a six-year-old daughter. She wants her to be a musician when she grows up, so she is            looking for a famous music school for her. ( )2. Sara's son is 10 years old. He is interested in water sports. He said that he hoped to be a sailor in             the future. ( )3. Alice learned to dance when she was young. Now she is a successful dancer. She wants her little             daughter to follow her steps. ( )4. Mary is always worried about her daughter, who is poor at math and English at school, so she is             looking for a training centre to help her daughter. ( )5. Gina has a son who is a football fan. He knows about almost all the well-known football players.             He wishes to be a football star.

A                                                                        Aqualility     Making water safe and fun. Swimming lessons are for all ages from birth. Small groups are in warm pools in Reigate on Monday & Friday afternoons. Call 07914 688 826 B                                                                       Manor House     A small and friendly school for girls 2-16 offers a modern and caring environment. Bring your daughter and come and see why our girls are so happy and do so well. Call 01372 45768 C                                                                     Little Kickers     Why do we get a kick out of every class? It's fun. The children have fun learning new skills. So if you want your kid to be a football star or just to be happier, why not come and have a ball with us? Call 01753 83109 D                                                                    Monkey Music     Since 1993 thousands of children across the UK have grown up with Monkey Music. Our wonderful teaching program introduces music to young children in a way they can easily understand and enjoy. Call 0193 82866 E                                                                     Kip McGrath     Do you want your child to succeed at school? We have very good Math and English teachers. We are for children aged 6-16. Call 01483 303233 F                                                                  Farnham Dance     New ballet (芭蕾) classes at the St. John's Centre, 19 Tilford Rd, Farnham GU9 8DJ. Tuesday afternoons, 10 week terms. Call 01252 727347

1954年9月，第一届全国人民代表大会第一次会议在北京召开，会议的首要任务是（）

A、选举政府组成人员

B、制定宪法

C、制订经济发展规划

D、审议政府工作报告

中国十大元帅之一，字福骈的是哪位“聂”姓元帅？

某建筑公司与客户签订了一项总金额为1 900万元的建造合同，工程已于2001年7月开工，2003年6月完工。该项合同在2001年年末预计工程总成本为1 500万元。2002年客户提出变动部分设计，经双主协商，客户同意追加投资100万元。2002年年末，预计工程总成本为1 600万元。该建造合同的其他有关资料如下：
(单位：万元)

项目	2001年	2002年	2003年
累计实际发生成本	300	1200	1600
已结算工程价款	240	1000	760
实际收到价款	200	800	1000

假定：该项建造合同的结果能够可靠地估计；该公司采用累计实际发生的合同成本占有合同预计总成本的比例确定该项合同的完工进度。
要求：
(1)计算2001年、2002年末的合同完工进度。
(2)计算2001年、2002年和2003年确认的合同收入和毛利，并编制与确认合同收入和毛利相关的会计分录。(要求写出相关的明细科目，答案中的金额单位以万元表示)