对于拔牙后要求进行牙槽骨修整的患者,合适的手术时间是()
A.拔牙后1周
B.拔牙后2周
C.拔牙后1个月以上
D.拔牙后2个月以上
E.拔牙后半年
参考答案:C
单片镀膜玻璃的镀膜层及磨砂玻璃的磨砂层应朝向()。
A.室外
B.室内
C.最外层
D.最内层
An analyst does research about debt covenants. Which of the following least likely lowers the risk to creditors A debt covenant specifying a minimum level of the borrower's:
A. current ratio.B. dividend payout ratio.C. interest coverage ratio.