Although shielding gases are not toxic, they _____
a. are highly explosive
b. can decompose into toxic gases
c. can displace oxygen when released in a large quantity
d. cause rapid metal corrosion
c
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In which type of basin are the pump and fluid sensors are submerged in the waste?
a. dry b. wet c. septic d. cistern
The pressure loss for fittings and devices can be expressed by which of the following units?
A) Psi. B) Equivalent ft. of straight pipe. C) Ft. of head. D) B only. E) A, B or C.
As the percentage of ____ increases, it can cause weld brittleness, reduced shock resistance, and increased cracking.
A. carbon B. sulfur C. phosphorus D. manganese
Ideally, the roof of the house should face __________ so a roof-mounted PV system receives the best exposure.
a. north b. south c. east d. west