A.good lubrication
B.low thermal stress
C.good mechanical properties
D.acid corrosion
第1题
A.good lubrication
B.low thermal stress
C.good mechanical properties
D.acid corrosion
第2题
A.corrosion
B.wear
C.construction
D.lung
第3题
A.control friction and wear
B.improve corrosion resistance
C.change physical property
D.alter dimension and vary appearance
第4题
B、Corrosion
C、Inertness
D、Degradability
第5题
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6题
第7题
A.stronger
B.thinner
C.more corrosion resistant
D.a lower grade steel
第8题
A.stronger
B.thinner
C.more corrosion resistant
D.a lower grade steel
第9题
A.Galvanic Couple
B.Design
C.Protective Coating
D.Cathodic Protection
第10题
A.Ions
B.Anode
C.Cathode
D.Electrolyte
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