【判断题】随着煤的生成年代越长,煤的挥发分含量越少。
【简答题】All ____is a continuous supply of fuel oil. A. what is needed B. that is needed C. the thing needed D. for their needs
【单选题】What document is needed for the check-in?
【单选题】What document is needed for further transfer?
【简答题】0104B03、如果物体的温度升高1°C,那么,物体的温度将升高______K。
【判断题】石油是天然材料,以石油为原料制造的塑料是人造材料。