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
D
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
内容
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对跨度不小于4m的梁、板,其模板施工起拱高度宜为梁、板跨度的( )。 A: 1/1000~1.5/1000 B: 1/1000~2/1000 C: 1/1000~3/1000 D: 2/1000~3/1000
- 1
跨度大于4m的梁或板的现浇混凝土起拱高度为( )。 A: 2/1000~4/1000 B: 1/1000~2/1000 C: 1/1000~3/1000 D: 4/1000以上
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当设计无规定时,梁或板底模起拱高度宜为全跨长度的() A: 1/100~3/100 B: 1/100~2/100 C: 1/1000~3/1000 D: 3/1000~5/1000
- 3
Suppose the cost to produce 100 units of a product is $5000, and the cost to produce 125 units is $6000. If cost c is linearly related to output q, find an equation relating c and q. A: None of the above B: q = 40 c – 1000 C: c = q/40 – 1000 D: q = c/40 + 1000 E: c = 40q + 1000
- 4
如梁跨度等于或大于4m,应使梁底模起拱,起拱高度宜为全跨长度的()。 A: 1/1000~2/1000 B: 1/1000~3/1000 C: 2/1000~3/1000 D: 1/1000~4/1000