A.0~0.5% B.0~1.5% C.0~2% D.0~2.5%
A.50mm B.60mm C.70mm D.80mm
A.以安全、質(zhì)量控制為重點(diǎn) B.都是重點(diǎn) C.以質(zhì)量為重點(diǎn) D.以質(zhì)量和進(jìn)度為重點(diǎn)