Which of the following indicates a radiographic image that is black and white with few shades of gray in between?
a. Short resolution
b. Long resolution
c. Short scale
d. Long scale
c. The term "short-scale contrast" (also called "high contrast") describes a radiograph in which the density differences between adjacent areas are large. The contrast is high because there are fewer shades of gray and more black against white.
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Which of the following statements regarding steel columns is MOST accurate?
A) Because of low compressive strength, the cross-section of steel columns can be small compared to their length. B) The possibility of a steel column buckling is due to the alloys contained in the column. C) Columns that cannot rotate at their ends are less likely to buckle than columns that are free to rotate at their ends. D) The possibility of buckling is less with steel columns than with columns made of other materials.
Which type of knot is used for joining two ropes of unequal diameter?
A. Bowline B. Handcuff C. Figure-eight D. Becket bend