你可能感興趣的試題

單項(xiàng)選擇題

The pneumatic containers which store bulk dry mud additives and cement on a ship are called（）.

A.mud hoppers
B.bulk bins
C.P-tanks
D.mud tanks

單項(xiàng)選擇題

The greatest strain，when lifting a load with the jumbo purchase，is on（）.

A.all of the parts，dividing the load equally
B.the hauling part because it must absorb the frictional losses of all the sheaves
C.the parts in the movable block
D.the standing part because it is directly connected to the weight

The safe working load for the assembled cargo gear and the minimum angle to the horizontal for which the gear is designed shall be marked on the（）.

你可能感興趣的試題

The pneumatic containers which store bulk dry mud additives and cement on a ship are called（）.

The greatest strain，when lifting a load with the jumbo purchase，is on（）.

The greatest strain，when lifting a load with the jumbo purchase，is on（）.