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跨境必备去水印免费选品数据全球150万+商家选择的TikTok数据分析工具免费跨境电商ERP,超120万跨境卖家的共同选择  Fire Day, as an important day to commemorate and remind us to pay attention to fire safety, not only represents the memory of the heroic deeds of firefighters, but also a good opportunity for us to learn fire knowledge and improve our self-rescue ability. So, when it comes to Fire Day in our country, the first thing you have to know is its specific date: November 9 every year.
  The reason why this day is designated as Fire Day actually comes from the coincidence of numbers and "police calls". As early as the 70s of the last century, China set the fire alarm phone number as "119", and the number "119" on November 9 coincided with it, symbolizing the popularity of "119" and the opening of various fire fighting activities.
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How to look at the direction of the nine squares of Jiyuan Qimen

计算结果:14.566873038134

  Summary: Fire Day is not only a day of remembrance, but also a time for us to learn how to protect ourselves and others, and to raise awareness of fire safety. I hope that everyone can actively participate in various fire protection activities on November 9 every year, and truly achieve "prevention first, prevention and elimination combined". I wish you all a lot of safety knowledge and practical skills on days like this!

1、三次方根也叫立方根。

2、一个数的立方等于a,那么这个数叫做a的立方根或三次方根。

3、正数的立方根是正数,负数的立方根是负数,0的立方根是0。

: Families or units should regularly organize fire emergency drills to improve emergency response capabilities.

5、在实数范围内,负数不能开平方,但可以开立方。

6、立方与开立方运算,互为逆运算。

7、在复数范围内,任何非0的数都有且仅有3个立方根。

What does Jiyuan Jiujin refer to

Jiyuan China Fire and Rescue Academy Score 2020
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