上颌斜面导板矫治器的导板与平面呈()
A.30° B.40° C.45° D.50° E.75°
A.1.5~2mm B.2~2.5mm C.2.5~3.5mm D.3~5mm E.5~6mm
A.直径为0.5~0.6mm的钢丝 B.直径为0.6~0.7mm的钢丝 C.直径为0.8~0.9mm的钢丝 D.直径为1.0~1.2mm的钢丝 E.直径为1.2~1.4mm的钢丝