A.投資估算 B.設(shè)計概算 C.修正概算 D.批準(zhǔn)的預(yù)算
A.40mm*40mm*5mm B.50mm*50mm*4mm C.50mm*50mm*5mm D.40mm*40mm*4mm
A.感應(yīng)雷 B.直擊雷 C.側(cè)擊雷 D.其它