问题题干答案解析相关问题热门问题最新问题

问题详情

A star that suddenly becomes several magnitudes brighter and then gradually fades is a（）.

A、double star

B、variable star

C、nova

D、nebula

时间：2022-01-05 03:04 关键词：天文航海

答案解析

C

相关问题

A rectangular area that can contain a document, program, or message.
Beneralization is a process by which a word that originally had a specialized meaning has now become ________.( )
His temper and personalky show that he can become a soldier of the top .
A sudden idea _____ to him that he might try the new method.
Generalization is a process by which a word that originally had a specialized meaning has now become ________.