【单选题】During the second stage of photosynthesis, ______.
A.
CO 2 is oxidized to carbohydrate
D.
CO 2 is liberated into the atmosphere
E.
carbohydrates are oxidized to release energy
【单选题】photosynthesis can be decomposed water molecule into H2 and O2 by catalysts.
【单选题】若电路中某元件的端电压为 ,电流 ,u、i 为关联方向,则该元件是_______
【单选题】若电路中某元件的端电压为 V ,电流 , u、i 为关联方向,则该元件是 ___ 。
【单选题】机动车驾驶人因交通肇事 ,处7年以上15年以下有期徒刑。
【单选题】In the course of photosynthesis glucosemolecules are formed from CO 2 and H 2 O. This process( )
D.
liberates energy to the atmosphere
【简答题】若电路中某元件的端电压为 ,电流 , u 、 i 为关联方向,则该元件是( ) 。