A、1:1.5~1:2.0
B、1:2.5~1:3.0
C、1:3.5~1:4.0
D、1:4.5~1:5.0
A.气层:3.5~5.0MPa,油层:1.5~3.5MPa
B.气层:3.0~4.0MPa,油层:1.5~3.0MPa
C.气层:3.5~5.0MPa,油层:2.0~3.0MPa
D.气层:4.0~6.0MPa,油层:2.5~3.5MPa
A.1:1.5~1:2.0
B.1:2.5~1:3.0
C.1:3.5~1:4.0
D.1:4.5~1:5.0
WHO牙周状况评价标准中牙结石平均检出区段数等级为中等的范围是
A.2.0~3.0
B.1.6~2.0
C.1.0~2.0
D.2.6~3.5
E.3.0~4.0