A straight ladder must be used on stable, level ground unless _____.
a. someone is at the bottom of the ladder and holds it for you
b. it is secured at the top and bottom to prevent movement
c. the ladder comes equipped with special non-skid safety feet
d. someone is at the top of the ladder and holds it for you
b. it is secured at the top and bottom to prevent movement
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____________________ is the composite of roughness and waviness deviations that are typical of a real surface.
Fill in the blank(s) with the appropriate word(s).
How many keepers are required to retain one cylinder valve?
A. one B. two C. four D. eight
____ is a tissue that conducts water and nutrients up the stem of a plant
a. Xylem c. Sporangia b. Phloem d. Angiosperm
The process of breaking the fat globules found in milk into a smaller size so the cream doesn't separate from the milk is:
A. pasteurization B. condensing C. homogenization D. grading