【多选题】The volume of the water flow and the change in _____ from one point to another determine the amount of available energy in moving water.
【单选题】_________, or energy carrier, is an energy form which has been transformed from primary energy sources. Electricity is one of the most common energy carriers, being transformed from various primary en...
【判断题】中心投影法是指所有投射线相互平行,这种投影的方法称为中心投影法。
【简答题】Please translate the following English into Chinese. Photosynthesis occurs only in the chlorophyll -containing cells of green plants, algae , and certain protists and bacteria. Overall, it is a proce...