甲建筑工程公司与乙水泥厂签订200 t水泥的买卖合同，交货时，由于乙公司所雇装卸工人的失误总共交货210 t。根据有关法律规定，乙公司所产生的lO t水泥的债权的发生根据是（）之债。
A. 合同
B. 侵权行为
C. 不当得利
D. 无因管理
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项目档案验收组人数应为不少于（）人的单数，组长由验收组织单位人员担任。
A. 3
B. 5
C. 7
D. 9
What is the bes! title for this passage？
A. Women s Power
B. An Unforgettable Experience
C. Tests Show Women Suited for Space Travel
D. Man Should Not Travel to Space Any More
Which of the following is TRUE according to the passage？
A. Sections of economy do not influence each other.
B. In the expansion phase the business maintains development in the long rtm.
C. The end of the business in the prosperity period can be obviously seen.
D. Parts of economy are closely related to each other.
No one can tell exactly whether the shareswill be doing well because ______________
A. stock markets are not the safest place tomake money
B. the factory or the company may do badly
C. the stock may go up or down for a numlSer ofuntold reasons
D. sometimes even if a factory or company does agood job, the stock may still go down
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