某生活垃圾焚烧厂采用机械炉排炉处理城市生活垃圾，单台机械炉排处理规模为500t/d，焚烧渣经水冷出渣机冷却后排出，炉渣含水10%。为检查该厂焚烧炉渣热灼减率，按生活垃圾焚烧污染物控制标准规定，从出渣机排渣口处取渣样，经干燥、灼热、冷却至室温后的质量比原渣样减重13%，计算焚烧渣热灼减率是（）
A.3.0%
B.13.4%
C.13.0%
D.3.33%
参考答案：D
解析：据《辅导教材》2P147，（90—87）/90=3.33%，因此，选择D
| 阅读下列材料，完成每篇材料后的问题。 | ||||
1. Hua Mandarin is the name of a ________. A. person B. school C. Chinese course D. summer camp 2. The new summer camp will last for ________. A. half a month B. twenty-two days C. one month D. two months 3.If you want to take part in the new summer camp, you can call at ________. A. 56791830 B. 62187038 C. 62197830 D. 57917380 4. The new summer camp mainly gives children a chance to enjoy ________. A. Chinese movies B. some paintings C. Chinese culture D. some sports 5. You can get more information about the new summer camp by ________. A. making a call B. sending an email C. visiting the website D. all the above |