Thursday, September 22, 2022
问题:冬至日在澳大利亚某地(南纬32.0度,东经141.5度)看日出,太阳应该是从()方向升起来。...
Thursday, September 22, 2022
问题:单选题宇宙中最强大的能源是什么?()A 光能B 磁能C 核能D 内能...
Wednesday, September 20, 2023
Thursday, September 22, 2022
问题:为便于观测日、月、五星的运动,中国古代很早就将北天极附近的天区分为()...
Sunday, September 18, 2022
问题:单选题天王星是赫歇尔在()年用自制的口径()的反射望远镜发现的。A 1781;5cmB 1681;15cmC 1781;15cmD 1681;5cm...
Wednesday, August 9, 2023
Friday, September 16, 2022
Friday, September 16, 2022
问题:单选题地球轨道附近太阳风的风速可达到()A 450m/sB 450km/sC 45m/sD 45km/s...
Friday, April 26, 2024
Friday, September 16, 2022
问题:单选题赤道地区,从春分到当年秋分,太阳位于()A 正天顶B 天顶北C 天顶南D 从天顶北移动至南...
Saturday, May 6, 2023
Thursday, September 22, 2022
Saturday, September 17, 2022
Thursday, September 15, 2022
问题:太阳向行星际空间不断抛射高速粒子流,最远可达距离太阳()...
Friday, September 16, 2022
Thursday, September 22, 2022
问题:单选题恒星的质量大小最大可以相差()倍A 10^3B 10^10C 10^25D 10^6...
Tuesday, June 27, 2023
问题:某望远镜口径为120毫米,物镜焦距为1500毫米,目镜焦距60毫米,则它的放大倍数为()倍。...
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022