?In SAW, the molten weld pool is protected from the surrounding atmosphere by ____.
A. ?shielding gas
B. ?self-shielding electrodes
C. ?oxygen in the air
D. ?molten flux and slag
Answer: D
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The letters CMR found on a UTP cable is an abbreviation for __________.
a. Communications Plenum Cable b. Communications Riser Cable c. Communications General-purpose Cable d. Communications Radio Cable
A(n) ____ is permitted on a small-appliance branch circuit.
A. dedicated clock outlet B. hood fan C. outdoor receptacle D. lighting outlet
What speed does a wave that is radiated through "free space" travel?
A. Speed of light B. Speed of sound C. Actual velocity D. Velocity of propagation
Which type of thermostats provide the closest temperature control?
A) Mechanical line voltage thermostats B) There is no difference in the ability of different thermostats to maintain close temperature control. C) Mechanical low-voltage thermostats D) Electronic low-voltage thermostats