井下注漿工單項(xiàng)選擇題每日一練(2019.07.26)

A.10cm
B.5cm

A.1.5/1000
B.1/1000
C.2/1000

A.0.1MPa
B.1MPa
C.1.5MPa

A.齒輪箱
B.立軸
C.液壓系統(tǒng)

A.10
B.18
C.20