A dentist adjusts the shade ofa restoration using a complementary color．This procedure will result in()
A. increased value
B. decreased value
C. intensified color
D. increased translucency
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Brittle materials have which of the following characteristics()
A. they undergo a lot of permanent deformation before fracturing
B. they tend to have a very ordered atomic structure
C. they respond poorly to tensile forces
D. A and B
你有6种材料，它们均可分类为后牙复合树脂，但它们各自的配方略有差异。你如何用花费最少、时间最短的试验来确定哪一种材料凝固后毒性最小？
在材料的机械性能测试中，去除外力后尺寸能够完全恢复的最大应力被称为()
A. 屈服极限
B. 强度极限
C. 弹性极限
D. 断裂极限
Chroma is that aspect ofcolor that indicates()
A. degree oftranslucency
B. degree ofsaturation ofthe hue
C. combined effect ofhue and value
D. all ofthe above
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