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问题 多项选择题

全要素生产率(又称科技进步贡献率)指经济增长中减去( )加权平均后的总和的增长。

A．劳动资料的贡献

B．劳动力的贡献

C．资本的贡献

D．自然资源

E．劳动对象的贡献

答案

参考答案：B,C

解析：全要素生产率(又称科技进步贡献率)，是指经济增长中减去所有投入要素 (劳动力、资本)加权平均后的总和的增长，也就是经济增长中除去劳动力、资本等要素投入的贡献后的“余值”部分。计算公式为：
TFP=Y-αK-βL

单项选择题

建设工程组织流水施工时，相邻专业工作队之间的流水步距不尽相等，但专业工作队数等于施工过程数的流水施工方式是( )。

A．固定节拍流水施工和加快的成倍节拍流水施工

B．加快的成倍节拍流水施工和非节奏流水施工

C．固定节拍流水施工和一般的成倍节拍流水施工

D．一般的成倍节拍流水施工和非节奏流水施工
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问答题

Ali is a dealer in Persian rugs. As his business has been rather slow, he placed an advertisement in the Saturday edition of his local paper stating:‘Once in a lifetime opportunity to own a handmade Persian antique rug for only ￡1,500 – cash only. This is a serious offer – the rug will go to the first person who accepts it – offer valid for one day only – today Saturday.’When Bud saw the advert, he immediately posted a letter of acceptance of Ali’s offer in order to make sure he got the rug.Cil also saw the advert and after inspecting the rug offered Ali a cheque for ￡1,500, but he refused to accept the cheque and told her she could not have the rug.Later in the day, Das asked Ali if he would keep the offer open until he could get to his bank to arrange a loan. Ali agreed, but subsequently, when Ed offered to pay ￡2,000 in cash for the rug, Ali sold the rug to him.On Monday morning Bud’s letter arrived, and Das returned to complete his purchase of the rug.Required:In the context of the rules governing the creation of contracts, advise:

(b) whether Bud has entered into a binding contract with Ali; (2 marks)
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