根据《会计档案管理办法》的规定，会计档案保管期限分为永久和定期两类。定期保管的会计档

在价值工程活动中，产品的不必要功能不包括( )。

A．多余功能
B．辅助功能
C．过剩功能
D．重复功能

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

For over one hundred and fifty years, Americans of all social classes have worn blue jeans． 小题1: Whether they are worn for work or for fashion today．Strauss' invention continues to be popular not only among Americans but also among people around the world．

Levi Strauss was born in Germany in 1829．小题2:   He grew up in Kentucky before moving to New York in 1847．Before becoming an American citizen and moving to the West in 1853, Strauss worked in his brother's dry goods business．This gave him a chance to produce his famous invention．After the gold rush of 1949, Strauss decided to move to the West to seek his fortunes．

Strauss did not want to be a person who searched an area for minerals．Instead, he knew he could make a good living by selling supplies to the miners．At first, he planned to sell sewing supplies and cloth． 小题3: When he heard miners complaining that their clothes were easily broken or they usually tore their pockets during mining, he decided to use a special fabric to make pants for the miners．These pants proved so popular that he quickly ran out of materials to make more．

In 1873, Strauss received a letter from a Jewish tailor named Jacob Davis who had invented a process of connecting pockets with copper rivets（铆钉）．This made the pants last a long time．Because Davis did not have the money to patent his idea, he offered to share it with Strauss if Strauss would agree to pay for the patent． 小题4:  ．

The business has been growing ever since and Levi Strauss' company is now one of the largest clothing companies in the world．

By the time Strauss died in 1902, he had made a great contribution to American fashion．小题5:  

A．As a young boy, he moved with his family to the United States．

B．Nobody knew what kind of material was suitable．

C．He did and Levi jeans have been made with metal rivets ever since．

D．However, he did not get much business for those products．E．He also made a great contribution to America's clothing industry．

F．Since they were invented by Levi Strauss, they have become a symbol of American consumer culture．

G．As the business grew, Strauss got much money from it．

呼吸衰竭（缺氧和二氧化碳）的发病机制主要有（）

A.V/Q比例失调

B.弥散功能减退

C.抗生素的应用

D.酸碱平衡失调

E.肺泡通气不足

甲、乙两车均于2012年8月18日分别向X、Y两 * * 险公司投保了交强险。甲车同时还向X保险公司投保了车辆损失险和商业第三者责任险，车辆损失险按投保时的新车购置价投保，保险金额为30万元，商业第三者责任险责任限额为25万元。在保险期间内，甲车在行驶中与乙车相撞，并引起火灾，甲车与乙车都被烧毁。甲车损失12万元，残值5000元，甲车司机受伤，产生医疗费用9000元;乙车损失8万元，残值3000元，车上财产损失2万元，乙车上的人员医疗费用6000元。经交通管理部门鉴定，甲车负全部责任，乙车无责。

X保险公司在交强险项下应该赔偿乙车()。

A.财产损失11万元 

B.财产损失2000元 

C.人员医疗费用9000元 

D.人员医疗费用6000元

（）是表面形状误差，是制造过程中形成的表面几何形状对标准形状的误差。

A.宏观几何形状误差

B.中间几何形状误差

C.微观几何形状误差

D.加工后温度变化误差