A.induction
B.resistance
C.capacity
D.piezoelectricity
A.stator coil
B.rotor coil
C.commutator
D.brushes
A burning AC motor would be considered what class of fire?
A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"
Electrical leads and insulation on a motor should be painted with_____.
A.heat-resisting acrylic
B.heat-resisting aluminum
C.insulating varnish
D.insulating white lead
A.2
B.4
C.6
D.8
The attitude of the author is ______ toward motor cars.
A.ironical
B.critical
C.appealing
D.militant
A、a alpha motor neuron and the innervated muscle fibers
B、a motor neuron
C、a group of motor neurons with same function
D、a group of muscle fiber that involved in execution of a special movement.
E、a bundle of muscle fibers
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