A high-voltage, high-frequency current used in GTAW work creates an arc that can jump a gap of about _____
A) 3/4 inch (19.1 mm) B) 1 inch (25.4 mm) C) 1/2 inch (12.7 mm) D) 1/4 inch (6.4 mm)
C
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Full-ported check valves installed in sewage systems to prevent backflow are called ___________.
a. RPZs b. atmospheric-type vacuum breakers c. double-check valve assemblies d. backwater valves
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Which crop needs more potash?
A) Fruit B) Leafy vegetables C) Pod D) Root
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The two types of grazing lands are ____________________ and ____________________
Fill in the blank(s) with correct word
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A paddle wheel detector is a __________-type of level measurement instrument.
A. point B. continuous
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