The three types of welding tests are destructive, nondestructive, and passive.
Answer the following statement true (T) or false (F)
False
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What is ONT?
What will be an ideal response?
How many wires are needed for a communicating control system to control a three-stage heat, two-stage cool heat pump?
A) Nine wires—one for each stage plus reversing valve and power B) Five wires—one for each stage heat and cool C) Four wires—two for power and two for communication D) No wires are required because communicating systems are wireless.
The thread with flattened roots and crests having a stronger thread describes ____________________
Fill in the blank(s) with correct word
To establish a straight reference line for installing the first course of siding, you should measure _____.
a. at four points on each side of the building b. down from the eaves c. up from the ground d. along the top of the foundation