月亮、镜子、烛焰、水母、红宝石等物体中,属于光源的有 .
烛焰;水母
An analyst identifies the following cash flows for an average-risk project: Year 0 - $ 5000 Years 1-2 $ 1900 Year 3 $ 2500 Year 4 $ 2000 The project’s discounted payback period if the company’s cost of capital is 12% , and internal rate of return of the project, are closest to: Discounted payback periodIRR ()
A. 3.0 years 13.3%
B. 3.0 years 23.2%
C. 3.9 years 13.3%
患者女性50岁,左腮腺区反复肿胀三年,平时有胀感,口内有咸味。
较符合慢性阻塞性腮腺炎的病史是
A.无自觉症状
B.肿胀消长与进食有关
C.腮腺区有枣样大小肿物
D.耳前放射痛
E.患者面颊麻木