A ____ is empty until waste is flushed through the system.
A. stack line
B. vent stack
C. soil line
D. riser
Answer: C
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A ____ plug is a type of plug that has one prong longer than the other so it can only be inserted into an outlet in one way.
a. polarized b. non-polarized c. abnormal d. regular
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Which of the following letters in Figure 1 shows a dimension of 4'-9"?
a. A
b. B
c. C
d. D
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What does ventilation provide for hog health?
What will be an ideal response?
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What category of oil will work for all automotive gasoline engines currently in use?
A. SL B. SO C. SM D. SN
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