A.0.5 B.1 C.1.5 D.2
A.產(chǎn)品合格證 B.質(zhì)量等級證 C.質(zhì)檢證 D.使用許可證
A.3~4h;5h B.4~6h;10h C.6~9h;15h D.7~10h;20h