A.transmitter
B.receiver
C.pipes
D.charging unit
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A.hunting gear
B.cut-off level
C.servo-motor
D.swivel block
A.control equipment
B.power unit
C.transmission mechanisms
D.fittings and pipeline
A.dog clutch
B.Pair of gears
C.worm gear
D.turning gear
A.cranes
B.mooring barrel
C.capstans
D.cable lifter
A.popular
B.common
C.in lead position
D.uncommon
最新試題
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