To dissolve carbon dioxide and to oxidize iron and manganese, water treatment systems use _____
a. aerators
b. softeners
c. precipitates
d. coagulation
a
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The correct rotational direction is indicated by ____ on the driven machine.
a. arrows b. labels c. braille-type dots d. tags
Technician A says that during a power balance test, the cylinder that causes the biggest RPM drop is the weak cylinder. Technician B says that if one spark plug wire is grounded out and the engine speed does not drop, a weak or dead cylinder is indicated. Which technician is correct?
A) Technician A only B) Technician B only C) Both Technicians A and B D) Neither Technician A nor B
Springs in folding stairs lose tension rapidly when exposed to heat which may cause the stair assembly
A. jam closed under fire conditions. B. barely open, limiting ingress/egress. C. swing down into the structure during a fire. D. collapse completely and fall into the structure.
Mixed format: 
(with a space between the whole number and the numerator)Fraction format: 
Reduce all fractions. The ceiling outlets on a residential job weigh an average of 
pound each, and 12 are required. Find the total weight of the outlets.
Fill in the blank(s) with the appropriate word(s).