TRONG CAC KHANG DINH SAU KHANG DINH NAO LA DUNG KHANG DINH NAO LA SAI A, 14 e N B, 0 e N
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trong cac khang dinh sau,khang dinh nao dung,khang dinh nao sai
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Trong cac khang dinh sau , khang dinh nao dung , khang dinh nao sai
14 thuoc N B ) 0 thuoc N*
C ) co so a thupoc N* ma ko thuoc N
D ) Co so B thuoc N ma ko thuoc N*
a đúng b sai còn c và d mình cũng ko chắc lắm tck mình nhé
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Cho cac khang dinh sau, khang dinh nao dung, khang dinh nao sai ?
a. 14 thuoc N
b. 0 thuoc N*
c. Co so a thuoc N*ma khong thuoc N
d. Co so a thuoc N ma khong thuoc N*
xl khong co dau nha cac ban
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trong cac khang dinh sau khang dinh nao dung A)2 tia chung goc la 2 tia doi nhau B)2 duong thang phan biet thi k co diem chung C)neu M la trung diem cua doan thang AB thi MA=MB D)co it nhat 1 duong thang di qua 2 diem A va B
cho tam giac ABC = tam giac MNP biet AC=MN,BC=MP . Khang dinh nao sau day la dung ? a, goc A = goc N b , goc B = goc M c, goc A= goc M d, goc C= goc P
cho bla tap hop cac so tu nhien le va lon hon30 trong cac khang dinh sau khang dinh lao dung
1) Cho hinh hanh ABCD, M la diem tuy y. Chon khang dinh dung trong cac khang dinh sau:
A. vecto MA + vecto MB = vecto MC + vecto MD B. vecto MB + vecto MC = vecto MD + vecto Ma
C. vecto MC + vecto CB = vecto MD + vecto DA D. vecto MA + vecto MC = vecto MB + vecto MD
1) Khang dinh nao sau day khong dungA. Tat ca cac doi tuong lao dong du truc tiep hay gian tiep deu co nguon goc tu tu nhienB. Mot vat nao do la tu lieu lao dong hay doi tuong lao dong con tuy thuoc muc dich su dung gan voi chuc nang ma no dam nhan trong san xuat C. Mot so doi tuong lao dong hoan toan do con nguoi tao ra va khong co lien he gi boi tu nhienD. Cung voi su phat trien cua khoa hoc ki thuat, con nguoi ngay cang tao ra nhieu nguyen lieu nhan tao co tinh nang va tac dung nhu y muon
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1) Khang dinh nao sau day khong dung
A. Tat ca cac doi tuong lao dong du truc tiep hay gian tiep deu co nguon goc tu tu nhien
B. Mot vat nao do la tu lieu lao dong hay doi tuong lao dong con tuy thuoc muc dich su dung gan voi chuc nang ma no dam nhan trong san xuat
C. Mot so doi tuong lao dong hoan toan do con nguoi tao ra va khong co lien he gi boi tu nhien
D. Cung voi su phat trien cua khoa hoc ki thuat, con nguoi ngay cang tao ra nhieu nguyen lieu '' nhan tao'' co tinh nang va tac dung nhu y muon
Cau 5: Trong cac khang dinh sau, khang dinh nao dung, khang dinh nao sai?1.Ba diem phan biet la ba diem thang hang.2.Voi ba diem phan biet luon co hai diem nam ve cung phia doi voi diem con lai.3.Voi ba diem thang hang phan biet luon co hai diem nam khac phia voi diem con lai.4.Voi ba diem A,B,C thang hang thi diem B luon nam giua hai diem A,C.5.Co mot va chi mot duong thang di qua hai diem (phan biet) cho truoc.6.Hai duong thang phan biet thi song song voi nhau.7.Hai tia chung goc thi cung nam...
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Cau 5: Trong cac khang dinh sau, khang dinh nao dung, khang dinh nao sai?
1.Ba diem phan biet la ba diem thang hang.
2.Voi ba diem phan biet luon co hai diem nam ve cung phia doi voi diem con lai.
3.Voi ba diem thang hang phan biet luon co hai diem nam khac phia voi diem con lai.
4.Voi ba diem A,B,C thang hang thi diem B luon nam giua hai diem A,C.
5.Co mot va chi mot duong thang di qua hai diem (phan biet) cho truoc.
6.Hai duong thang phan biet thi song song voi nhau.
7.Hai tia chung goc thi cung nam tren mot duong thang.
8.Hai tia chung goc thi doi nhau
9.Neu diem M nam giua diem A,B thi no la trung diem cua doan thang AB.
10.Neu MA=MB thi M la trung diem cua doan thang AB.
11.Neu MA+MB= AB va MA=MB thi M la trung diem cua doan thang AB.
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