The very high pH levels found in some arid region soils are most likely due to high levels of exchangeable ________
A) Al(OH)2+ B) Mg2+ C) Ca2+ D) Na+ E) Al3+
D
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The type of solder that should be used for electrical work is ________.
A) Acid core B) 50/50 with acid paste flux C) 60/40 with no flux D) Rosin core
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A branch connection that is welded into an opening that has been cut into a straight length of pipe is a _____.
a. tee b. saddle c. lateral d. cross
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Which type of Phillips screwdriver has the sharpest tip?
A) #1 B) #2 C) #3 D) None of these
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The type of fastener that should be used to secure a wooden window to the structure is a _____
a) casing nail b) lag screw c) box nail d) finish nail
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