()should be greased every month or two and it should be kept on a reel when not in use.
A、Wire rope
B、Hemp rope
C、Nylon rope
D、Wooden rope
A、Wire rope
B、Hemp rope
C、Nylon rope
D、Wooden rope
A、A.dirt will cause corrosion of bearing B、B.bearings will leak oil excessively C、C.dirt is very abrasive when mixed with grease D、D.grease will become inflammable
A、are made of bronze,brass,or soft alloy metals B、should be painted red in order to identify hose lengths C、are specially hardened to prevent crushing D、should be greased frequently
A、are made of bronze, brass, or soft alloy metals B、should be painted rad in order to identify hose lengths C、are specially hardended to prevent crushing D、should be greased frequently
A、small wire brush B、compressed air jet C、clean dry cloth D、10% solution carbon solvent and water
A、to windward should be opened and the ones to leeward should be closed B、to leeward should be opened and the ones to windward should be closed C、should be opened D、should be closed