134,68,36,21,( )A.18 B.14.5 C.12 D.9
134,68,36,21,( )
A.18 B.14.5 C.12 D.9
相关考题:
【单选题】气缸盖固定螺栓有几个?A.8个B.10个C.12个D.9个
134,68,36,21,( )
A.18 B.14.5 C.12 D.9