可摘局部义齿的卡环体进入基牙倒凹区,将会导致()
A.义齿弹跳
B.基牙敏感,咬合不适
C.义齿摘戴困难
D.支托折断,义齿下沉
E.发音不清
参考答案:C
Regulations of Customs duties on Imports and Exports of the People' s Republic of China is one of the _______ basis of the collection of the Customs duty.
A.legalB.financialC.managerial D.none of the above
某大型水电站地基位于花岗岩上,其饱和单轴抗压强度为50MPa,岩体弹性纵波波速4200m/s,岩块弹性纵波波速4800m/s,岩石质量指标RQD=80%。地基岩体结构面平直且闭合,不发育,勘探时未见地下水。根据《水利水电工程地质勘察规范》GB50487-2008,该地基岩体的工程地质类别为下列哪个选项?()
A.I类
B.II类
C.III类
D.IV类