PROBLEM TO BE SOLVED: To definitely attach first and second storage tanks where two kinds of fluids are each stored to corresponding supply routes without making any mistake.SOLUTION: A tank body 551 of the first storage tank 550 is made larger or smaller than a tank body 581 of the second storage tank 580, an insertion section 582 of the second storage tank 580 is made smaller or larger than an insertion section 552 of the first storage tank 550, and the sizes of the upper receiving sections 561, 591 and lower receiving sections 562, 592 of first and second receivers 560, 590 are allowed to correspond to those of tank bodies 551, 581 and insertion sections 552, 582 of each storage tank 550, 580.COPYRIGHT: (C)2011,JPO&INPIT【課題】2種類の流体を貯留した第1及び第2貯留タンクを取り違えることなく、対応した供給経路に確実に取り付けるようにする。【解決手段】第1貯留タンク550のタンク本体551を、第2貯留タンク580のタンク本体581よりも大きくまたは小さくし、第2貯留タンク580の挿入部582を、第1貯留タンク550の挿入部552よりも小さくまたは大きくし、第1及び第2受け体560,590の上側受け部561,591及び下側受け部562,592を、各貯留タンク550,580のタンク本体551,581及び挿入部552,582の大きさに対応させる。【選択図】図1
