A.30mm B.50mm C.100mm D.200mm
A.高檔 B.中檔 C.低檔
A.值班隊(duì)長(zhǎng) B.跟班隊(duì)長(zhǎng) C.技術(shù)隊(duì)長(zhǎng) D.主管隊(duì)長(zhǎng)