In a population of 5000, incidence of disease is 100 in 1 year duration of disease studied for is 2 years calculate Prevalence ( )
A: 400/1000
B: 80/1000
C: 20/1000
D: 40/1000
A: 400/1000
B: 80/1000
C: 20/1000
D: 40/1000
举一反三
- In<br/>a population of 5000, incidence of disease is 100 in 1 year duration<br/>of disease studied for is 2 years calculate Prevalence () A: 400/1000 B: 80/1000 C: 20/1000 D: 40/1000
- 一般施工总体布置图和单位工程施工平面图分别为() A: 1:1000~1:5000和1:500~1:1000 B: 1:500~1:1000和1:2000~1:5000 C: 1:2000~1:5000和1:500~1:1000 D: 1:1000~1:5000和1:500~1:1000
- 模板起拱高度宜为梁、板跨度的()。 A: 1/1000~3/1000 B: 2/1000~4/1000 C: 1/1000~4/1000 D: 2/1000~3/1000
- 凭证式国债以()元为起点并按()元的整数倍发行。 A: 50、50 B: 100、100 C: 1000、1000 D: 5000、1000
- 跨度为7m的梁、板,其模板施工起拱高度宜为梁、板跨度的()。 A: 1/1000~2/1000 B: 2/1000~4/1000 C: 1/1000~3/1000 D: 1/1000~4/1000