Millions of stars are travelling about
in space. A few form groups which journey together, but most of them travel
alone. And they travel through a universe so large that one star seldom comes
near to another. For the most part each star makes its journey in complete
loneliness, like a ship on an empty ocean. The ship will be well over a million
miles from its nearest neighbor. From this it is easy to understand why a star
seldom finds another anywhere near it. We believe, however, that some two thousand million years ago, another star wandering (漫游) through space, happened to come near our sun. Just as the sun and the moon raise tides (潮汐) on the earth, so this star must have raised tides on the surface of the sun. But they were very. different from the small tides that are raised in our oceans; a large tidal wave must have tra A. our earth exists before the sun B. how space is formed C. no one knows where the earth comes from D. our earth used to be a high mountain on the sun [多项选择]根据《联合国海洋法公约》的有关规定,外国船舶在领海内进行的哪些活动不属于无害通过
A. 对沿海领土完整进行任何武力威胁 B. 以任何类型的武器进行演习 C. 在船上起落或接载飞机 D. 在船上发射、降落任何军事装置 [判断题]外国人在被行政拘留、拘留审查或者其他限制人身自由以及限制活动范围期间,其所属国家驻华外交、领事官员要求探视的,决定机关应当及时安排。
A.正确 B.错误 [单选题]云MAS产品的特点有:( )。
A.设备安全 B.内容安全 C.账户信息安全 D.以上都是 [单项选择]颈痛伴手麻应首先考虑()
A. 椎动脉型颈椎病 B. 神经根型颈椎病 C. 脊髓型颈椎病 D. 交感神经型颈椎病 E. 混合型颈椎病 [单选题] ( )是坚持和发展中国特色社会主义的本质要求和重要保障,是国家治理的一场深刻变革。
A. 全面依法治国 B. 全面从严治党 C. 全面深化改革 D. 全面制定方针政策 [多选题]在钻井过程中,钻时录井应采集的项目有( )。
A.井深 B.捞砂时间 C.钻压 D.钻时 [单项选择]片剂的常用包装形式为()。
A. 锡管 B. 铝管 C. 金属盒 D. 泡罩式 我来回答: 提交
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