题号 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
答案 | |||||||||||||||
题号 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
答案 |
元素 | 含量(%) |
碳(C) | 18 |
氧(O) | 65 |
氢(H) | 10 |
氮(N) | 3 |
磷(P) | 1.4 |
硫(S) | 0.3 |
其他元素 | 小于3 |
题号 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
答案 | B | C | C | B | A | D | D | D | B | A | D | C | C | C | A |
题号 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
答案 | C | C | A | B | C | A | B | B | A | B | C | A | A | D | D |