A.鉆進(jìn) B.起下鉆桿 C.起下鉆鋌 D.空井
A.報(bào)警信號(hào)為一長(zhǎng)鳴笛,關(guān)閉防噴器信號(hào)為兩短鳴笛,開(kāi)井信號(hào)為三短鳴笛 B.報(bào)警信號(hào)為一長(zhǎng)短笛,關(guān)閉防噴器信號(hào)為兩短鳴笛,開(kāi)井信號(hào)為三短鳴笛 C.報(bào)警信號(hào)為一長(zhǎng)短笛,關(guān)閉防噴器信號(hào)為三短鳴笛,開(kāi)井信號(hào)為兩短鳴笛 D.報(bào)警信號(hào)為兩短鳴笛,關(guān)閉防噴器信號(hào)為一長(zhǎng)短笛,開(kāi)井信號(hào)為三短鳴笛
A.隊(duì)長(zhǎng) B.技術(shù)員 C.大班 D.司鉆