A.0.5~0.6mm B.0.6~0.7mm C.0.7~0.8mm D.0.8~1mm
A.2小時(shí) B.4小時(shí) C.6小時(shí) D.8小時(shí)
A.300~350mm B.350~400mm C.450~500mm D.450~600mm