The concept of precedence that is fundamental to a network diagram states that _____.
a. Activity B is optional according to the budget
b. Activity B cannot begin until Activity A is complete
c. Activity A is a higher priority than Activity B
d. Activity A is scheduled before Activity B
b. Activity B cannot begin until Activity A is complete
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To treat a salty flavor in water, the usual method is to install a _____.
a. reverse-osmosis system b. distillation system c. filtration system d. ion-exchange system
All mammals _____
a. give birth to live young b. give birth to altricial young c. are exotherms d. are vertebrates
A circle in an isometric sketch will appear as an ellipse.
Answer the following statement true (T) or false (F)
A _____ locks into a post when in the down position and disallows vehicles from driving around it at a crossing.
Fill in the blank(s) with the appropriate word(s).