对于个别乳磨牙早失后,缺隙的保持可用
A.丝圈式缺隙保持器
B.腭弓缺隙保持器
C.Hawley保持器
D.活动缺隙保持器
E.舌弓缺隙保持器
参考答案:A
“最低价格投标中标”包含三个含义( )。
A.能够满足招标文件的实质性要求
B.经评审的价格最低
C.投标价格不得低于成本
D.投标程序合法
Which of the following statements about NPV and IRR is FALSE()
A. The NPV will be positive if the IRR is less than the cost of capital.
B. The IRR can be positive even if the NPV is negative.
C. The NPV method is not affected by the multiple IRR problem.