3,12,30,60,( )A.75B.90C.105D.120
3,12,30,60,( )
A.75
B.90
C.105
D.120
相关考题:
20、蜗杆传动的油温最高不应超过()A.30℃B.50℃C.80℃D.120℃
3,12,30,60,( )
A.75
B.90
C.105
D.120