Behaviour being used: Deferred feedback
Minimum fraction: 0
Maximum fraction: 1
Question variant: 1
Question summary: 燃料电池汽车是指以氢气、（ ）等为燃料，通过化学反应产生电流，依靠电机驱动的汽车。: 甲醇; 乙醇; 液化气; 天然气
Right answer summary: 甲醇
Response summary:
Question state: todo