Groove welds whose faces are to be finished flush or convex are specified by adding the appropriate contour and ____ symbols to the weld symbol.
A. size
B. joint preparation
C. finishing
D. root opening
Answer: C
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The easiest method of projecting the ground level onto the elevation is to measure the distance on the site plan from one contour line to the next.
Answer the following statement true (T) or false (F)
When a semiconductor material is mixed with an impurity that has ____ valence electrons, such as arsenic or antimony, the lattice structure has an excess of electrons.
A. two B. three C. five D. seven
You are inspecting hydraulic brakes. You should pump the brake three times then apply firm pressure to the brake pedal and hold for five seconds. If the brakes are working properly, the pedal should.
a. Sink to the floor. b. Not move. c. Depress slightly.
Another name for a downflow heating unit is ____________________.
Fill in the blank(s) with the appropriate word(s).