单项选择题
A.≦0.7% B.≦0.6% C.≦0.5% D.≦0.8%
A.（150~180）r/min B.（120~150）r/min C.（90~120）r/min D.（60~90）r/min
A.200um B.150um C.100um D.50um
A.湿度 B.转速 C.速度 D.温度
A.4 B.3 C.2 D.1
A.清水 B.清洁剂 C.安替克 D.酒精
A.50℃ B.60℃ C.70℃ D.80℃
A.50min B.40min C.30min D.20min
A.90KPa B.80KPa C.70KPa D.60KPa
A.70%-90% B.40%-70% C.20%-40% D.10%-20%
A.0.2~0.3MPa B.0.4~0.5MPa C.0.5~0.8MPa D.0.75~0.90MPa