主キーの2つの特徴は何ですか？

Answer only if you know!

こんにちは， 皆様、このサイトであまり日本語のpostを見つからなくて、もし質問があったら、ぜひcommentに聞いてください。 hello, i couldn't really find any posts on this site about japanese. but if you have any questions about japanese, feel free to ask me down below in the comments/replies. have fun learning !

When grant broke the confederate lines on april 2, 1865, le

Islam kültür ve medeniyeti islam şehirlerinde caminin merkez olmasinin kisaca nedeni