【判断题】采用稀释与接种法测定BOD5时,水样在25℃±1度的培养箱中培养5天,分别测定样品培养前后的溶解氧,二者之差即为BOD5值
【判断题】采用稀释与接种法测定 BOD 5 时 , 水样在 25 士 1 °C的培养箱中培养 5 天 , 分别测定样品培养前后的溶解氧 , 两者之差即为 BOD 5 值。
【单选题】The teacher didn't _____ to my questions which were not too difficult for me to think over.A.ans
A.
12. The teacher didn't _____ to my questions which were not too difficult for me to think over. A.answer
【判断题】采用稀释与接种法测定BOD5时,水样在25℃±1℃的培养箱中培养5d,分别测定样品培养前后的溶解氧,二者之差即为BOD5值。
【简答题】《红楼梦》的品读研究形成了一门显学叫( )
【单选题】In peace, too, the Red Cross is expected to send help to__________there is human suffering.