()the moving parts on the davit of the lifeboat.
A、Greasing
B、Grease
C、Greasy
D、Greased
A、Greasing
B、Grease
C、Greasy
D、Greased
A、A.all the fall except the hauling part B、B.the hook that engages the weight to be moved C、C.that part to which power is applied D、D.that part of the falls made fast to one of the blocks
A、To add power to the engine B、To keep the engine firmly attached to its supporting base C、To keep moving engine part in their proper relative positions D、To rotate the crankshaft
A、bedplate, connecting rods B、crankshaft, the connecting rods C、frames, crossheads D、crankshaft, the cylinder