题目内容

【题目】神舟九号飞船于2012年6月18日与天宫一号完成自动交会对接。神舟九号与天宫一号对接形成组合体后,航天员将通过对接通道,进入天宫一号目标飞行器实验舱工作和生活。据此完成题。

【1】最可能干扰航天器与地面指挥系统通信联系的是

A.云雾 B.太阳活动 C.流星 D.太阳辐射

【2】下列说法符合景海鹏、刘旺、刘洋在神舟九号飞船中看到的实际情况的是

A.金黄色的天空上没有星星

B.白色的天空上点缀着几颗明星

C.蔚蓝色的天空上满天繁星

D.黑色的天空上满天繁星

【答案】

【1】B

【2】D

【解析】

试题分析:

【1】太阳活动产生许多高能带电粒子,这些高能带电粒子会影响无线电通讯,可能影响到航天器接收地面信息。选B正确。

【2】宇宙中接近真空状态,天空背景是黑色,不是金色、白色、蔚蓝色;地球表面有厚厚的大气,对太阳辐射有散射,晴朗的天空是蔚蓝色,早晚天空呈黄白色。选D正确。

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【语篇导读】本文为说明文,主要介绍了几种交通工具。

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