单项选择题
A.消毒粉:水=1.2克:7L B.消毒粉:水=1.2克:8L C.消毒粉:水=1克:7L D.消毒粉:水=2克:8L
A.104°、C4档 B.104°、C5档 C.204°、C4档 D.205°、C4档
A.60~70°C B.60~75°C C.65~70°C D.60~80°C