| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent fuel having the type and concentration that are not suitable for a fuel cell from being accidentally supplied to the fuel cell. <P>SOLUTION: There is a mark 37 on the surface of the case 25 of a fuel tank 12. When a photosensor 39 provided in a digital camera 10 detects the mark 37, a CPU judges that the fuel suitable for the fuel cell 16 is stored in the fuel tank 12 for enabling the fuel cell 16 to be operated. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
