Acetylene cylinders that have been lying on their sides must stand upright for at least ____ hours before they are used.
A. two
B. three
C. four
D. five
Answer: C
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Building codes are designed to protect consumers by providing minimum guidelines for construction and inspection of a structure to prevent fire, structural collapse, and general deterioration.
Answer the following statement true (T) or false (F)
In the float glass manufacturing process, the molten glass (raw materials) floating over molten tin bath is rapidly cooled, which solidifies it into a sheet. The sheet emerging from tin bath is slowly heated in the annealing chamber and then allowed to cool to room temperature before being cut to required sizes. Why is the glass subjected first to rapid cooling and why is it subsequently heated?
What will be an ideal response?
What is the alternative when public sewers are not available?
What will be an ideal response?
What is the maximum reading on a typical R22 high pressure gauge?
A) 120 psig B) 800 psig C) 300 psig D) 500 psig