A solid polymer electrolyte membrane that has excellent methanol-crossover-suppression performance is provided, along with a fuel cell that employs the electrolyte membrane. The projection lens set includes an aspherical lens with a distortion coefficient larger than 0. Systems may be provided to ensure safety and operation of the air treatment only when passengers and personnel are not present in the cabin. A kit using the tool further includes surgical equipment needed for the surgery. The second capacitor is connected between the second voltage and a reference voltage. The construction utilizes non-circular polygon shaped panels, which provide greater nesting efficiency than previously achieved by comparable airbags using round panels.