A column of water in a glass tube is 140 cm high. If the temperature rises 65ºC, assuming the tube’s diameter remains constant, the water column would rise about:
A) 3.2 cm
B) 2.6 cm
C) 2.2 cm
D) 1.8 cm
D) 1.8 cm
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The NEC® requires that handholes must always be _____.
a. fully enclosed b. made of metal c. prominently marked to identify the function of the enclosure d. made of concrete
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_____ is a moist substance wrapped around a girdled area
A) Sphagnum moss B) Electrician's tape C) Wax D) Cambium
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?What does the letter "C" stand for in the FCA electrode E70C?
A. ?metal-cored B. ?flux-cored C. ?alloy-filled core D. ?CO2 shielding gas required
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DC power shall be supplied by a listed dc power supply with a maximum output of ____ volts.
A. 10 B. 20 C. 25 D. 30
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