Power locks are being discussed. Technician A says that power door locks operate in a similar manner to power windows. Technician B says that a permanent magnet motor is used to lock and unlock the door latch. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer: A
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Which of the following is LEAST-Likely a type of sensor?
A. Permanent magnet AC generator B. Magnetoresistive sensor C. Optical sensor D. Reach sensor
What chemicals are used against weeds to eliminate or destroy them?
a. nematicides c. bactericides b. fungicides d. herbicides
An ionization smoke detector contains a material which ionizes the air in the sensing chamber, thus rendering it conductive and permitting a current to flow between two charged electrodes. This gives the sensing chamber an effective electrical conductance. When smoke particles enter the ionization area, they decrease the conductance of the air by attaching themselves to the ions, causing a reduction in mobility. When the conductance is less than a predetermined level, the detector responds. What material ionizes the air in the sensing chamber?
A. a small amount of magnesium B. a small amount of radioactive material C. a small amount of copper material D. a small amount of hydrogen gas
The AWS has specifications for both cast and ____________________ for all FCA welding wires.
Fill in the blank(s) with the appropriate word(s).