A relay is a device that ________
A) has a coil to actuate some contacts that control other circuits
B) uses an electromagnet to open and close contacts
C) isolates the actuating signal from the control signal
D) all of these
D
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____ are materials that permit electrons to flow through them easily.
a. Conductors b. Insulators c. Semiconductors d. Liquids
The pulse generator ________
A) Signals the electronic control unit (module) B) Used as a tachometer reference signal by the computer and has no other function C) Signals the computer that fires the spark plug directly D) Fires the spark plug directly
Most of the absorption of nutrients occurs in the stomach of monogastrics.
Answer the following statement true (T) or false (F)
The minimum slope on which composition shingles may be used if a double-lap underlayment is applied is
_____. a. 4 in 12 b. 3 in 12 c. 2 in 12 d. 1 in 12