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问题 单项选择题

债券的交易形式有现货交易、期货交易和（）

A．回购交易

B．即时交易

C．例行交易

D．现金交易

答案

参考答案：A

解析：

答案为A。债券的交易形式有现货交易、期货交易和回购交易。

问答题

Buyer and Seller entered into a sales contract which stipulated that Seller should, on or before 10 January 2009, sell a shipment of personal computers (PCs) at a price of 300,000 yuan to Buyer, who should arrange transportation and pay the full price upon taking delivery. For the purpose of launching a market promotion plan at the end of 2008, Buyer asked Seller to provide the goods 20 days before the due date. Seller disagreed with the request since its capacity to process the PC was unable to meet the needs of Buyer. Under such a circumstance, Buyer made efforts to find PCs from other sources, and then transferred the original sales contract to a third party – Company X – with discount. Buyer did not inform Seller of this. On 8 January 2009 Company X despatched a truck to Seller to pick up the PCs under the sales contract. However, Seller refused to provide the PCs on the grounds that there was no contract between Company X and Seller. Required: Answer the following questions in accordance with the relevant provisions of the Contract Law of China, and give your reasons for your answer:

(b) State whether the transfer of the sales contract by Buyer to Company X was valid. (5 marks)
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选择题

下列说法中正确的是（　　）

A．只有直的硬棒才能做杠杆

B．托盘天平是等臂杠杆

C．动力臂是支点到动力作用点的距离

D．动滑轮和定滑轮所起的作用是相同的
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