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在用氧弹式量热计测定苯甲酸燃烧热的实验中不正确的操作是( )

单选题
2021-09-01 23:30
A、在氧弹充入氧气后必须检查气密性
B、量热桶内的水要迅速搅拌,以加速传热
C、测水当量和有机物燃烧热时,一切条件应完全一样
D、时间安排要紧凑,主期时间越短越好,以减少体系与周围介质发生的热交换
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正确答案
D

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