你可能感興趣的試題

What does the term end-for-end refer to in regard to a wire towing hawser?（）

A.Cutting off the bitter and towing ends of the wire rope
B.Splicing two wire ropes together
C.Removing the wire rope from the drum and reversing it so that the towing end becomes the bitter end
D.Removing the wire rope from the drum and turning it over so that the wire bends in the opposite direction when rolled on a drum

單項(xiàng)選擇題

What can be used to measure the percentage of oxygen inside a chain locker?（）

A.Flame safety lamp
B.Combustible gas indicator
C.Oxygen indicator
D.H₂S meter