题目内容

【题目】2016年10月17日早7：30，神舟十一号飞船在酒泉航天发射基地成功发射。神舟十一号将与天宫二号对接，目的是为了更好地掌握空间交会对接技术，开展地球观测和空间地球系统科学、空间应用新技术、空间技术和航天医学等领域的应用和试验。据此完成下列问题。

【1】

A. 17日18：30 B. 16日18：30

C. 16日20：30 D. 17日18：30

【2】

A. 借助地球自转线速度，节约燃料

B. 便于火箭残骸收集

C. 初始阶段飞越国土，便于地面跟踪观测

D. 初始阶段飞越国土，便于发射技术保密

【答案】

【1】B

【2】D

【解析】试题分析：

【1】据材料知，北京时间（东八区）10月17日早7：30，神舟十一号飞船在酒泉航天发射基地成功发射，与美国东部部纽约（西五区）相差13个时区，相差13个小时，且比北京时间晚13个小时，计算可知，纽约所处区时间是16日18：30，B项正确。

【2】神舟十一号飞船朝偏东南方向发射，主要的原因是借助地球自转线速度，节约燃料； 便于火箭残骸收集；初始阶段飞越国土，便于地面跟踪观测，故A、B、C项正确；发射技术的保密显然与发射的方向无关，故D项说法错误。

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