A.along
B.will
C.throughout
D.for
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A.an alternating
B.a rush
C.a direct
D.an exciting
A.disconnected
B.switched off
C.cut off
D.connected
A.voltage
B.current
C.power
D.frequency
A.An alternator
B.fresh water generator
C.A compressor
D.A clarifier
A.Switches
B.panels
C.alarm units
D.safety devices
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