若收集了10组数据(Xi，Yi)，i=1，2，…，10，为求线性回归方程，已求得=1

In January 2008 Arti entered in a contractual agreement with Bee Ltd to write a study manual for an international accountancy body’s award. The manual was to cover the period from September 2008 till June 2009, and it was a term of the contract that the text be supplied by 30 June 2008 so that it could be printed in time for September. By 30 May, Arti had not yet started on the text and indeed he had written to Bee Ltd stating that he was too busy to write the text.Bee Ltd was extremely perturbed by the news, especially as it had acquired the contract to supply all of the accountancy body’s study manuals and had already entered into extensive preliminary expenses in relation to the publication of the new manual.Required:In the context of the law of contract, advise Bee Ltd whether they can take any action against Arti. (10 marks)

某产品售价75元，销售毛利率60%，此产品的毛利额是（）。

血栓闭塞性脉管炎病变主要位于

A．大、中动脉

B．中小静脉

C．中小动静脉，而以动脉为主

D．中小动静脉，而以静脉为主

E．小动脉，而不发生于静脉

卫生监督行为成立的内容要件是（）。

A.行 * * 力的存在

B.行为内容合法

C.法律效果的存在

D.行 * * 的实际运用

复合管