【单选题】Scientists need to find a way to _____ the carbon dioxide from the ice.
【多选题】企业缴纳的下列保险金可以在税前直接扣除的有( )
【简答题】一个灯泡接在电压为220V的电路中,通过灯泡的电流是0.5A,通电时间是1h,它消耗了多少电能?合多少千瓦•小时?
【简答题】阅读理解。 Paragraph 1 Scientists have learned a lot about the kinds of food people need. They say that there are several kinds of food that people should eat every day. They are: (1) green and yellow vege...
【简答题】If science is to advance, scientists need the ______ and the ______ to let their imaginations roam.
【简答题】一个灯泡接在电压是220V的电路中,通过灯泡的电流是0.5A,通电时间是1h,它消耗了多少电能?合多少度电?
【简答题】一个灯泡接在电压是220V的电路中,通过灯泡的电流是0.5A,通时间是1小时,问它消耗了多少电能?
【多选题】企业缴纳的下列保险金可以在税前直接扣除的有( )。
【单选题】In _____ preparation for the launching of Shenzhou Ⅶ, scientists need ______ knowledge of weather changes.
【单选题】The scientists are___a new car which doesn't need oil.