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[主观题]
酸蚀面积及时间描述哪项是正确的A.一般为牙尖斜面的1/3,恒牙酸蚀20~30s,乳牙60sB.一般为牙尖斜面
酸蚀面积及时间描述哪项是正确的
A.一般为牙尖斜面的1/3,恒牙酸蚀20~30s,乳牙60s
B.一般为牙尖斜面的2/3,恒牙酸蚀20~30s,乳牙60s
C.一般为牙尖斜面的2/3,恒牙酸蚀60s,乳牙30s
D.一般为牙尖斜面的1/2,恒牙酸蚀60s,乳牙60s
E.一般为牙尖斜面的1/2,恒牙酸蚀30s,乳牙30s
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酸蚀面积及时间描述哪项是正确的
A.一般为牙尖斜面的1/3,恒牙酸蚀20~30s,乳牙60s
B.一般为牙尖斜面的2/3,恒牙酸蚀20~30s,乳牙60s
C.一般为牙尖斜面的2/3,恒牙酸蚀60s,乳牙30s
D.一般为牙尖斜面的1/2,恒牙酸蚀60s,乳牙60s
E.一般为牙尖斜面的1/2,恒牙酸蚀30s,乳牙30s
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