A double star is a star that（）. -题库考试答案搜索网

A double star is a star that（）.

单选题

2022-02-21 19:28

A、has a declination equal to twice that of the Sun
B、comprises two stars that appear close together
C、is twice as bright as a single star
D、suddenly becomes much brighter and then fade

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正确答案

B

试题解析

标签：天文航海

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