Mot phan xuong san xuat theo ke hoach phai lam 800 san pham trong 1 so ngay nhat dinh. Nho cai tien ki thuat, moi ngay lam tang nang suat 25 san pham nen phan xuong khong nhung hoan thanh truoc 2 ngay ma con vuot ke hoach 40 san pham. Theo ke hoach phan xuong phai hoan thanh trong bao nhieu ngay?

Cho 21,1g hon hop gom ZN, ZnO vao dung dich \(CUSO_4\) du sau phan ung ket tua lap phan chat ran cho tac dung voi HCL du thi thu duoc 12,8g ran khong tan. Tinh phan tram Zn va ZnO

Bang phuong phap hoa hoc hay nhan biet. Viet PTHH

a) 3 kim loai: FE, AG, AL

b) 4 chat khi: CO, \(CO_2,O_2\), \(H_2\)

c) 4 dung dich: KOH, \(H_2SO_4\), KCL, \(KNO_3\)

Cac su co khi lap dat mach dien va cach khac phuc

Em hay lap ke hoach lap mach dien gom: 2 cau chi, 1 o dien, 1 cong tac 3 cuc dieu khien 2 bong den soi dot? Mach dien nay thuong duoc ung dung lap o dau

Thanh phan dan toc nuoc ta co thuan loi va kho khan gi doi voi su phat trien kinh te xa hoi

Giai thich tai sao nha nuoc lai rat chu y den su phat trien kinh te xa hoi o cac vung dong bao dan toc it nguoi

Dan so dong va tang nhanh o nuoc ta co thuan loi va kho khan gi cho su phat trien kinh te xa hoi

Sua loi sai:

1. Gas (is consumed) (faster) than (it) (produces)

2. (The song) to (that) we (listened) last night (was) beautiful

3. We (left) the hall (quietly) (so that) not to (disturb) the meeting

4. I (don't know) (what time) (does she often come) home (in) the evenig

5. Your dress (looks) (beautifully). It must (be) (expensive)

Chon trong am:

1. A. earthquake B. typhoon C. energy D. damage

2. A. rubbish B. machine C. cyclone D. dynamite

Doc doan van:

...(1)...there are many celebrations..(2)...out the year, Tet or Luna New Year holiday is the most important celebration for Vietnamese people. Tet is a festival which occurs in late January or early February. It usually..(3).....for three days which is a time for family members who live apart try to be together. Before Tet they try to clean, decorate their houses and make preparation to welcome New Year...(4)... the Tet holiday some people go to the pagodas and churches to pray, others come to see their relatives and friends. They often...(4)..."happy new year" to each other and they...(5)....hope to meet good fortunes all the year

1. A. even B. however C. although D. in spite of

2. A. through B. over C. runs D. comes

3. A. spreads B. goes C. lasts D. is

4. A. in B. after C. before D. during

5. A. speak B. reply C. say D. respone

6. A. too B. either C. neither D. also