Chafing gear ______.
A.reduces and prevents corrosion of standing rigging
B.prevents corrosion of running rigging
C.reduces and prevents wear caused by the rubbing of one object against another
D.protects the body against extreme cold
第1题:
A.reduces routing table entries
B.auto-negotiation of media rates
C.efficient utilization of MAC addresses
D.dedicated communications between devices
E.ease of management and troubleshooting
第2题:
A storm is forecast for the area where your vessel is moored. For its safety you should put ______.
A.more slack in the mooring lines
B.a strain on the mooring lines
C.chafing gear on the mooring lines
D.grease on the mooring lines
第3题:
A.has stood … has already gone
B.has been standing… has already been
C.is standing… has already gone
D.has been standing…has already gone
第4题:
Gear box
第5题:
Chafing gear(防摩擦装置) is used to______.
A.anchor the boat
B.pick up heavy loads
C.protect fiber rope from abrasion
D.strengthen mooring lines
第6题:
Wear occurring at the tips of the reduction gear teeth is usually the result of ______.
A.surface fatigue
B.fretting corrosion
C.heavy overloading
D.gear misalignment
第7题:
Chafing gear should be placed______.
A.at all wearing points of mooring lines
B.around running rigging
C.on wire rope only forces
D.at the bitter ends of all standing rigging
第8题:
One of the most common causes of reduction gear failure is gear wear caused by scoring as a result of
A.surface fatigue of the gears
B.an inadequate lube oil film
C.plastic flow of the gears
D.fretting corrosion from water
第9题:
高温腐蚀(钒腐蚀和热腐蚀)(high temperature corrosion)
第10题:
CORROSION INHIBITOR的中文意思是什么?