An LED located on the front cover of the smoke detector, manufactured by Whelan Engineering Co., flashes every ____ seconds to indicate the detector is in working order.
A. four
B. five
C. nine
D. ten
Answer: A
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The formed end of steel tubing is called a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).
The interior lights of a vehicle equipped with an illuminated entry system stay on even after the ignition switch is placed in the "on" position; after a short interval, the lights turn off. Technician A says the input signal from the ignition switch may be open. Technician B says the entry module may be faulty. Who is correct?
A. Technician A only B. Technician B only C. Both Technician A and B D. Neither Technician A nor B
During which of the following conditions is EGR NOT commanded?
A) Idle B) Wide open throttle C) Cold engine D) All of these are correct.
Plants are autotrophs because:
A) they transpire. B) they can be self-fertile. C) they can adapt to climate changes. D) they photosynthesize.