23. The authors speculation about the appropriateness of models using spheres of two sizes for binary alloys would be strongly supported if models using spheres of two sizes yielded
values for density identical to values yielded by one-sphere models using the smaller spheres only
values for density agreeing nearly perfectly with experimentally determined values
values for density agreeing nearly perfectly with values yielded by models using spheres of three sizes
significantly different values for density depending on the size ratio between the two kinds of spheres used
the same values for density as the values for appropriately chosen models that use only medium-sized spheres
24. The authors attitude toward the prospects for the economic utilization of glassy metals is one of
disinterest
impatience
optimism
apprehension
skepticism
25. According to the passage, which of the following determines the crystalline structure of a metallic alloy?
At what rate the molten alloy is cooled
How rapid the rate of formation of the crystalline phase is
How the different-sized atoms fit into a dense, random-packed structure
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