磷酸锌水门汀使用时调和速度过快，将使固化后材料强度_________。
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Rate the following cements in terms of compressive strength from highest to lowest()
A. zinc oxide-eugenol，zinc phosphate，resin
B. zinc phosphate，resin，zinc oxide-eugenol
C. resin，zinc phosphate，zinc oxide-eugenol
D. All of the above
The most effective sealant for preventing moisture contamination ofa GIC is a()
A. copal varnish
B. vamish provided by the GIC manufacturer
C. thin layer of Dycal
D. low-viscosity，light-activated bonding resin
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