A level of C02 up to _______ ppm is considered safe for humans for an 8 hour period
Fill in the blank(s) with correct word
5,000 ppm.
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?The first service and checkup is recommended at _____ miles after an engine rebuild.
What will be an ideal response?
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Which of these substances is used to pickle food?
a. fish oil c. sugar b. salt d. vinegar
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The ________________ is the minimum distance a qualified person must keep from exposed energized equipment without having a document plan and the appropriate PPE.
A. arc flash boundary B. restricted approach boundary C. limited approach boundary D. prohibited approach boundary
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Why are mushroomed chisel heads dangerous?
A) Chips may break off. B) The head becomes extremely bouncy. C) The mushrooms on the head make it slippery. D) The chisel is soft and rotten.
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