你可能感興趣的試題

A.250mm
B.300mm
C.350mm
D.340mm

A.移動
B.轉(zhuǎn)動
C.扭動
D.搬動

A.40Mn鋼
B.40Cr鋼
C.40MnB鋼
D.35CrMo鋼

A.10mm
B.12mm
C.14mm
D.18mm

A.20mm
B.24mm
C.28mm
D.32mm

A.200mm
B.250mm
C.300mm
D.350mm

A.18
B.20
C.22
D.24

A.18
B.20
C.22
D.24

A.10°
B.15°
C.20°
D.25°

A.非金屬
B.有色金屬
C.合金
D.塑料