單項(xiàng)選擇題

The boom indicator tells the operator at what angle the boom is compared to the（）.

A.horizontal position of the boom
B.vertical position of the boom
C.horizontal position of the load being lifted
D.vertical position of the load being lifted

你可能感興趣的試題

單項(xiàng)選擇題

The boom indicator on a crane will indicate the（）.

A.length of the boom
B.angle of the boom
C.lifting capacity of the boom
D.direction of the boom

單項(xiàng)選擇題

Stop（）the derrick at once，the gooseneck is bent.

A.to use
B.to operate
C.maneuvering
D.using

The boom indicator tells the operator at what angle the boom is compared to the（）.

你可能感興趣的試題

The boom indicator on a crane will indicate the（）.

Stop（）the derrick at once，the gooseneck is bent.

Stop（）the derrick at once，the gooseneck is bent.