题目内容
建筑安装工程费用定额的编制原则不包括定性与定量分析相结合的原则。
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按照《中华人民共和国招标投标法》的规定，评标委员会由招标人的代表和有关技术、经济等方面的专家组成，其中技术、经济专家不能少于成员总数的2/3。
A contract is an agreement between two or more people in which one person agrees to do something by a specified date in return for something done by the other. Usually the contract is a written document signed and dated by both parties. It must state clearly the consideration, that is, what is to be given or done by one person in exchange for what is given or done by the other. If one person does what was promised and the other does not, that other may be sued in court and required by court order to make good. He or she may also be required to pay for damages suffered as a result of the failure to perform. The things to be done by both parties must be stated in definite terms or the court will hold that contract is too vague and general to be enforced. Similarly, the time period within which the work is to be done must be definite or the court will say that the document is not a contract.1) A contract is an (46) .2) Usually the contract is a (47) document.3) A contract must (48) what is to be given or done.4) The one, who does not do what was promised, will be required to (49) damages.5) The things to be done by both parties must be stated in (50) . 47（）
腹部胀满膨大，或状如蛙腹，按之如囊裹水，常伴下肢浮肿，是为
已知A，B都是n阶矩阵且AB=A-B，证明AB=BA．
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