A high-quality ore contains ____ percent metallic iron
A) no more than 12
B) approximately 20
C) no less than 95
D) at least 60
D
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We often see a lumber grade stamp with an "S-P-F" mark, implying that the lumber species may be Spruce, Pine, or Fir. "Hem-Fir" mark is another example of combining two or more species?Hemlock and Fir. What is the reason for combining different species into one group?
What will be an ideal response?
A gang mower is actually a large bank of ____________________ mowers, usually pulled by a tractor
Fill in the blank(s) with correct word
How many significant digits are in the number 8,600?
Fill in the blank(s) with the appropriate word(s).
What part is used to prevent the lubricant from leaking out of the housing of a straight roller axle bearing?
A. oil seal B. grease seal C. rubber seal D. flange