x=1-t(d):y=t Cau 17: Viet phuong trinh mat cau tiep xu c voi hai duòng thang z=-1vàx=2u(A):y=1+u z=u và có tam thuó c mat phang (P): 2x-y+z-3=0? C(x+5/2)^2+(y-3)^2+(z-1)^2=(113)/8 +(y-3)2+(z-1)2 = A.8 B.|x-5/2|^2+(y+3...
Cau 34. Viet phuong trình mǎt cau (S) có tám I(-1;1;-2) và di qua diem A(2;; 1;2).C A. (S):(x-1)^2+(y+1)^2+(z-2)^2=5 B. (S):(x-2)^2+(y-1)^2+(z-2)^2=25 . C. (S):(x+1)^2+(y-1)^2+(z+2)^2=25 . D. (S):x^2+y^2+z^...
Cau 2: Viet phuong trinh hó a ho c cú a kim loai sat tá c dung voi dung dich axit sunfuri c loāng biēt sán phām là sǎt (II) suafu a và có khí bay lēn A A. Fe+H_2SO_4→FeSO_4+H_2 B. Fe+H_2SO_4→Fe_2SO_4+H_2 C. Fe+H_2SO_4→FeSO_4+S_2...
Cau 17. Trong khong gian Oxyz cho hai diem A(2;4;-1). B(5;0;7) . Viet phuong trinh tham so cua B tia AB x=2+3t x=2+3t v=4-4 B.y=4-4f(120z=-1+8t=-1+8t x=2-3t x=2+3t C. D.y=4-4t t(t≤0).z=-1-8t z=-1+8t 相关知识点: 试题来源: ...
题目Cau 15Viet phuong trinh duong thang d di qua diem A(-1; -5) và tao voi truc Ox mōt goc bāng 120°A B. d:y=-√3x+√3-5 C. d:y=√3x-√3-5 D. d:y=-√3x+√3+5 相关知识点: 试题来源: 解析 A 反馈 收藏
Schecter A, Papke O, Ball M, Cau HD, Dai LC, Minh NQ, Quynh HT, Phuong NNT, Phiet PH, Chi HK, Vo DT, Constable JD, Spencer J (1992a) Dioxin and dibenzofuran levels in blood and adipose tissue of Vietnamese from various locations in Vietnam in proximity to Agent Orange Spraying....
Cau 17. Trong khong gian Oxyz, viet phuong trình chính tǎ c cú a duòng thǎng qu a diém E( 1;2;-3)vaF(3 ;-1;1).。B A.(x-1)/3=(y-2)/(-1)=(z+3)/1 B.(x-3)/2=(y+1)/(-3)=(z-1)/4 C.(x-3)/1=(y+1)/2=(z-1)/(-3) D.(x+1)/2=(y+2)/...
► Suggestion for Family activities: Bike through rice fields | Take a boat at Tam Coc, Trang An, or Van Long | Go camping and overnight in Cuc Phuong National Park | Take a bath at Kenh Ga Hot SpringQuang Binh► Attractions: Tam Toa Church | Tien Son cave| Phong Nha cave | ...
Phuong Nam Theater (2 Nguyen Binh Khiem Street, District 1, insideMuseum of Vietnam History): shows available from Tuesday to Sunday every week at 9 AM, 10 AM, 11 AM, 2 PM, 3 PM, 4 PM. Ticket:VND 150,000/person Hanoi: Thang Long Water Puppet Theater (57B Dinh Tien Hoang – Hoan...
Cau 245: Chon phuong trinh hoa hoc viet dung (chuong 7/bai 34/chung/muc 2) A2Cr^(3+)+Zn→2Cr^(2+)+Zn^(2+) B. 2Cr+6H^+→2Cr^(3+)+3H_2 C. Ag+Cu^(2+)→Cu+Ag^+ D. 2CrO_2^(2-)+3Br_2+8OH^-→2CrO_4^(2-)+6Br^-+4H_2O Dáp án: A ...