A.40% | B.28.6% | C.33.3% | D.50% |
60g |
60g+150g |
A.18.2%,9.1%,10% | B.18.2%,9.1%,5% |
C.20%,9.1%,10% | D.20%,5%,10% |
A.等于15% | B.大于15% | C.小于15% | D.无法估算 |
A.62.5% | B.50% | C.33.3% | D.25% |
A.蒸发掉45g水 | B.蒸发掉50g水 |
C.加入10gKNO3 | D.加入15gKNO3固体 |
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