... proton, 8 notron, 8 electron B. 8 proton, 10 notron, 8 electron C. 8 proton, 10 notron, 10 electron D. 8 proton, 8 notron, 10 electron Câu 48: Tổng số ( p, n, e) trong ngun tử của ngun tố X là 58. ... chuyển sang màu xanh là: A. anilin, amoniac, natri hiđroxit. B. metyl amin, amoniac, natri axetat. C. anilin, metyl amin, amoniac. D. amoni clorua, metyl amin, natri hiđroxit....
Ngày tải lên: 23/12/2013, 12:17
2000 câu hỏi luyện thi chứng chỉ A, B
... the driver's name. a. see b. will see c. would see d. sees >d 2 48. We are going to buy the furniture if we some money. a. borrow b. borrowed c. will borrow d. would borrow >a 249. ... buy b. bought c. had bought d. has bought > b 167. After we had had breakfast, we the house. a. leave b. left c. had left d. has left > b 1 68. I had heard the news before you me about it....
Ngày tải lên: 02/04/2013, 03:32