| 摘要 |
PROBLEM TO BE SOLVED: To prevent a multiple pushing state even though a plurality of buttons are simultaneously pushed. SOLUTION: A plurality of water outflow states are selectively switched by pushing operation of the buttons 7a and 7c corresponding to each of the water outflow states. A multiple pushing prevention mechanism is arranged so as to interrupt simultaneous pushing of at least two buttons 7a and 7c. COPYRIGHT: (C)2005,JPO&NCIPI
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