Amino acids are classified into two classes.
A. Strong and weak
B. Big and small
C. Essential and non-essential
D. None of these
Answer: C
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The Class B system, for initiating devices, connects through a two-wire circuit and _________.
A. Does not use an end of line device B. Uses an end of line device C. Is an outdated system no longer used in the United States D. Uses a series limiting resistor
Which of the following is a common hazardous material on a steel-erection job site?
a. Acetylene b. Graphite c. Asbestos d. Formaldehyde
In a process called ____________________, fat turns into glycerin
Fill in the blank(s) with correct word
Which of the following are considered to be "heavy metals" that can contaminate soils and the food chain?
A) lead B) copper C) zinc D) cadmium E) all of the above