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题目内容双击单词支持查询和收藏哦～
On a radio tower, a red light flashes every 6 seconds and a blue light flashes every 10 seconds. If both lights flash together at a certain time, how many seconds later will both lights flash together the next time?
_____seconds
_____seconds
30 显示答案
以上解析由 考满分老师提供。
