2022高三核心模拟卷九师联盟答案

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One possible version:Dear Mr Philipp,I'm Li Hua,a senior 3 student from China,whointends to apply for further study in your college aftergraduation.Would you please give me some detailedinformation regarding the following aspects?The first thing I want to know is,as a foreignstudent,what I should prepare to be qualified to go toyour college.The next thing is the tuition fee andother costs I have to pay while studying in your col-lege.In addition.does your school provide accommo-dation for international students?If so.please tell meabout the conditions.I would appreciate it if you could give me an ear-ly reply.Yours,Li Hua

16.A“天问一号”探测器不再环绕地球运动，但还在太阳系中，故发射速度大于11.2k/s,A正确；设火星的质量为M,探测器的质量为m,对探测器绕火星做圆周运动，根据万有引力提供向心力得CM=m答，解-24π2r3得M=祭，根据密度公式得D一MGT3πr4πR3G严R,B错误；探测器在飞向B处的过程中，只有万有引力3做功，机械能守恒，C错误；探测器在B处由椭圆轨道进入圆轨道，要做近心运动，故需点火减速，D错误