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25°36′*4等于几 39°48′+41°37′等于几
人气:151 ℃ 时间:2020-02-04 08:04:07
解答
25°36′*4
=100°144′
=100°(120+24)′
=102°24′
39°48′+41°37′
=80°85′
=80°(60+25)′
=81°25′
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