A.steam plants, electric motors and compressed air
B.diesel engine, hydraulic machinery and compressed air
C.steam plants, electric motors and hydraulic machinery
D.diesel engines, steam plants and hydraulic machinery
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A.crane
B.hatch cover
C.windlass
D.steering gear
A.possible
B.necessary
C.practicable
D.impracticable
A.erosion
B.corrosion
C.pitting
D.dezincification
A.erosion
B.corrosion
C.cavity
D.scouring
A.0~967
B.0~033
C.0~031
D.0~969
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