question: hydropower station:tram
choices.label: A B C D
choices.text: windmill:table lamp nuclear power plant:nuclear submarine reservoir:faucet oil field:car
explanation: the function of "hydropower station" is to generate electricity, "tram" can provide energy from "hydropower station", and "tram" is a means of transportation the role of a "windmill" is to generate electricity, irrigate, watch, etc. "table lamp" can be powered by a "windmill", but the "table lamp" is not a means of transportation the function of a "nuclear power plant" is to generate electricity. "nuclear submarine" refers to the submarine designed with a nuclear reactor as the power source. "nuclear submarine" cannot be powered by a "nuclear power plant" the functions of a "reservoir" are water supply, power generation, flood control, etc. "faucet" refers to the water valve that controls the size of water flow, and the "faucet" cannot be supplied with energy by the "reservoir" the role of the "oil field" is to produce oil, the "car" can provide energy from the "oil field", and the "car" is a means of transportation .