When brazing very small joints or thin metal, the type of flame used in order to prevent the base metal from
melting is a(n) _____.
A) carburizing flame
B) neutral flame
C) oxidizing flame
D) non-feathering flame
Answer: A
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One benefit to digital sampling of analog data is
A) the sample waveform can be easily stored B) the levels between the sampled points on the waveform can be easily found C) the sample will reproduce an exact replica of the input D) none of the above
An electrolyzer uses electricity to free hydrogen from ____.
a. water b. natural gas c. methanol d. LPG
For pure metals such as silver, copper and aluminum, the resistance of a conductor ____ as the temperature increases.
A. increases B. decreases C. remains unchanged D. changes only slightly
Healthy amphibian skin is _____
a. shed regularly b. tacky and dark c. not shed d. shed in patches