A.1.00m B.1.25m C.1.27m D.1.50m
A.2 B.3 C.4 D.5
A.升温 B.水冲 C.换过滤器
A.≥9级 B.≥7级 C.≥6级 D.≥8级
A.7d B.14d C.21d D.28d