题目

Austin Children’s Museum This 7,000-square-foot museum aims to entertain and educate children up to age 9. In its Global City exhibit, people can go shopping for groceries, order lunch at a diner, pretend that they’re doctors or construction workers, and more. In other fun exhibits, they learn about Austin’s history, explore the world of water, and experience life on a large Texas farm. Open time: From Tuesday to Saturday, 10:00 a.m.～5:00 p.m. On Sunday, 12:00 a.m.～5:00 p.m. Address: 201 Colorado St, Austin, Texas 78701 Phone: 512-4722499 Brooklyn Children’s Museum Founded in 1899, 我国未来将建立月球基地，并在绕月轨道上建造空间站，如图所示，关闭动力的航天飞机在月球引力作用下向月球靠近，并将与空间站在B处对接，已知空间站绕月轨道半径为r，周期为T，引力常量为G，下列说法中错误的是(　 　)A．图中航天飞机正加速飞向B处B．航天飞机在B处由椭圆轨道进入空间站轨道必须点火减速C．根据题中条件可以算出月球质量D．根据题中条件可以算出空间站受到月球引力的大小