全口义齿修复中作用于基托与粘膜之间的力、应称之为（）
A.粘固力
B.吸引力
C.粘着力
D.粘附力
E.吸附力
参考答案：E
An analyst does research about price-to-earnings ratio and gathered the following nformation about three common stocks with the same retention ratio:
The highest price-to-earnings (P/E) ratio is most likely associated with:()
A. Stock A.
B. Stock B.
C. Stock C.
以短时水压失效压力试验测定的管环向强度为管的内压失效环向应力时，安全系数不小于（）。
