牙周病的基础治疗是指()
A.正确刷牙和洁治术
B.洁治术和刮治术
C.刮治术和根面平整
D.服用消炎药和使用含漱液
E.口腔卫生宣传和定期的洁治术
参考答案:B
If the coupon payments are reinvested at the coupon rate during the life of the issue, then the:()
A. yield to maturity is greater than the realized yield.
B. yield to maturity is less than the realized yield.
C. yield to maturity cannot be determined from the information given.
凹陷痕迹是指能反映出工具接触部位表面()的形象痕迹。