In the late 1800s, crop production was aided by which of the following?
a. Advances in pesticides
b. Advances in fertilizers
c. Establishment of land-grant universities
d. All of the above.
e. None of the above
D
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Which of the following is a category of positive-displacement compressors?
A) Axial B) Rotary C) Centrifugal D) Dynamic
Choose the item that best matches. Identify the following:
1) 
2) 
3) 
4) 
5)
A) Scissors
B) Needle nose pliers
C) Vise Grip
D) Tin Snips
E) Slip-joint pliers
F) Channel Locks
G) Duck bill pliers
H) Diagonal cutter
As reverse bias increases, the depletion region between the N-channel and the P-type material attached to the gate terminal also increases.It is called the gate-to-source ____ voltage.
a. saturation b. cutoff c. depletion d. junction
Which of the following are trends for the future regarding environmental protection?
A. Public pressure from environmental advocacy groups. B. Improved public relation. C. Fear of liability and risk. D. All of the above.