自然 國中 約4年以前 請問如何判斷是不是鹽類 （還是只能用背的 3. ()下列各組物質中按『酸、鹼、鹽、氧化物』的順序排列的是? A. H2SO4, Na2O, MgCl2, Ca(OH)2 B. Na2CO3, Ba(OH)2, Na2O, H2SO4 C. HNO、KOH、Na、CO、CaO D. H.SO、CaCO3、KOH、SO, 已解決 回答數: 1
自然 國中 約4年以前 求解 B 2 27. 7.A. 有大小正立方體鐵塊各一,邊長各為 2A 與A,水平置於桌面,若小鐵塊對 對 桌面產生的壓力為P,試問大鐵塊對桌 面產生的壓力為何? (A)P(B)2P (C)3P (D)4P。 El ZX2 4 Zx2x2 = 8 已解決 回答數: 1
自然 國中 約4年以前 求解14的A，感謝 G A We all port to keep everyone safe. (A) careful B) carefully (C) more careful (D) the most careful 13. Most of Jeff's best books when he was sick and poor. (A) have written (B) were written (C) would write D) wrote 14. My brother doesn't live with us. He out after he got married. (A) has moved B) will move @was moving (D) moved me laugh. (A) made Bto have made D which makes (C) that make 16. At first, my bookstore's business not very good. But now it is dois B) does (A is 15. I like to read comic books we visit 已解決 回答數: 1
