The _________we pay for the garbage we produce is really too high.
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Many people would like to lead a ________________ than they do but then can not.
The amount of ________ produced is different from the country to country.
铸造金属全冠牙体制备时牙合面应磨除
A. 0.8～1.0mm
B. 0.3～0.5mm
C. 1.2～1.5mm
D. 0.6～0.7mm
铸造金属全冠牙体预备时，轴壁正常聚合角为（）
A. 0°~2°
B. 2°~5°
C. 5°~10°
D. 10°~15°
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