SOLUTIONS TO EXERCISES, LESSON 2
1.
c
d
2.
a
c
e
3.
4.
a
5.
b
c
d
6.
b
7.
8.
9.
e
Septic conditions in the lower compartment (sludge digestion) are a design
10.
c
d. By experience, an operator learns to correlate appearance and test results.
11.
d
12.
c
d
e
13.
a
14.
b
d
MD0161
2-64