题目内容

The frequency of an alternator at a given r/min is determined by the _______ .

A. number of turns of wire in the armature coil
B. number of magnetic poles
C. strength of the magnets used
D. output voltage

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_______is usually driven by the engine camshaft and supplies pilot air to the cylinder air

An air receiver
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Which of the following factors will affect the strength and magnitude of the signal？

A. The number of the gear tooth
B. The clearance between the pole pieces.
C. The size of the sensor.
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