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教材第55页第6题(20分)
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【简答题】.已知点P是圆C：x 2 ＋y 2 ＋4x＋ay－5＝0上任意一点，P点关于直线2x＋y－1＝0的对称点在圆上，则实数a等于________．
【简答题】A．They are attending a concert. B．They are negotiating about a price. C．They are planning to go for a date. D．They are buying something for their firm.
【单选题】Before_______over the company' s accounting division, Mr. Rayasit was in charge of planning and strategy.
A.
take
B.
taken
C.
taking
D.
took
【简答题】Ever thought of moving to a new country? How about starting a new country? Patri Friedman is planning to do just that. He left Google years ago to set up the Seasteading Institute. And his dream is to...
【单选题】The project life－cycle can be described as(72)．
A.
project concept，project plannin9，project execution，and project close－out
B.
project planning，work authorization，and project reporting
C.
project planning，project control，project definition，WBS development，and project termination
D.
project concept，project execution，and project reporting
【简答题】已知点P（1，4）在圆C：x 2 +y 2 +2ax-4y+b=0上，点P关于直线x+y-3=0的对称点也在圆C上，则a=______，b=______．
【简答题】(b) Identify and explain the financial statement risks to be taken into account in planning the final audit. (12 marks)
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