树脂基复合材料是以______为基体，以________或_______为增强材料的一类复合材料。
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从业者对职业的认识、意向以及对职业所持的主要观点是指()。
A. 职业意识
B. 职业良心
C. 职业精神
D. 职业荣誉
社会主义职业精神的本质是()。
A. 认真负责
B. 奉献
C. 为人民服务
D. 遵纪守法
Which of the following is FALSE concerning compomers()
A. easy to place and polish
B. stronger than composites
C. more esthetic than glass ionomers
D. primarily micromechanical bond to tooth structure
A composite restoration is wider than the diameter of the light tip of the curing unit．In
A. moving the tip over the surface for the required time
B. placing the tip stepwise over each area and exposing each area for the required time
C. positioning the tip far enough from the surface to illuminat
D. the entire surface
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