单项选择题
A.two B.one C.more D.much
A （）is at the end of the cargo runner for picking up th...
单项选择题A （）is at the end of the cargo runner for picking up the load.
A.sling B.hook C.block D.tackle
The （）is fixed at the bottom of the derrick.A.gooseneck...
单项选择题The （）is fixed at the bottom of the derrick.
A.gooseneck B.block C.derrick step D.crane
The （）is pumped onto the ship at the loading port by sh...
单项选择题The （）is pumped onto the ship at the loading port by shore pumps.
A. oil B. gas C. water and fuel D. timber
