问答题

2021年,我国全年航天发射次数有望突破40次。载人航天空间站工程进入关键验证和建造阶段;天问一号火星探测器到达火星,实施中国首次火星 “绕、着、巡”(orbiting ,landing and roving) 探测;多颗民用空间基础设施业务卫星发射(satellites for civil space infrastructure ) 。

答案： In 2021, the construction of China’s space station will ente...

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Indetermining the present value of the prospective benefits (oftenreferred to as the defined benefit obligation), the following areconsidered by the actuary:()

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