A. Stratified sampling
B. Simple random sampling
C. Systematic sampling
D. Nested sampling method
2. The following does not belong to class C infectious diseases is ()
A. Plague
B. Tuberculosis
Remember to give points next time.
C. Leprosy
D. dysentery
3. The clinical manifestations of toxic pulmonary edema are divided into several stages ()
A.3 period
B.4 period
C.5 period
D.6 period
4. According to the vertical variation characteristics of temperature, the atmosphere is divided into () layers.
A.3
B.5
C.6
D. VII
5. The main carcinogenic factor in the environment is ()
A. Harmful factors in food
B. Physical harmful factors
C. Chemical harmful factors
D. Biological harmful factors
Full score: 4 points
6. The main purpose of drinking water disinfection is ()
A. keep a certain amount of residual chlorine in the water.
B. improving the sensory characteristics of water
C. removing toxic substances from water
D. kill pathogenic bacteria and prevent infectious diseases.
Full score: 4 points
7. The incidence of a disease in a certain area obviously exceeds the level of sporadic incidence over the years, which is called ()
A. Outbreak
B. Endemic epidemics
C. Epidemics
D. prevalence
Full score: 4 points
8. The spread of pathogens between people is called ()
A. Direct communication
B. Indirect communication
C. horizontal transmission
D. vertical propagation
Full score: 4 points
9. Group strategy and high-risk group strategy belong to several levels of prevention ()
A. Level 1
B. Level II
C. Level 3
D. low-level
Full score: 4 points
10. The main means to check the development degree of hearing adaptation, hearing fatigue and deafness is to measure ().
A. Listening field
B. Pain area
C. sound intensity
D. auditory threshold
Full score: 4 points
1 1. The temperature rise at work mainly depends on ().
A. Working time and temperature
B. Labor intensity and temperature
C. Air humidity and temperature
D. labor intensity, labor time and labor temperature
Full score: 4 points
12. What is not an iatrogenic carcinogenic factor is ()
X-ray
B. Asbestos
C. synthetic sex hormones
D. cyclophosphamide
Full score: 4 points
13. The following does not belong to the natural environment ()
A. Biological factors
B. Chemical factors
C. Physical factors
D. Psychosocial factors
Full score: 4 points
14. The following is not a dietary survey method ()
A. Inquiry method
B. Bookkeeping methods
C. Chemical analysis methods
D. Measurement method
Full score: 4 points
15. The following are not chemical food poisoning ()
A. Insecticide
B. Nitrite
C. Some metals
D. green beans; Beans; green soya bean
Full score: 4 points
16. Herbivores eat plants directly ()
A. First-class consumers
B. Secondary consumers
C. Third consumers
D. zero-level consumers
Full score: 4 points
17. Long-term inhalation of dust containing bound silica will lead to ()
A. Mixed pneumoconiosis
B. silicosis
C. Metal pneumoconiosis
D. silicate lung
Full score: 4 points
18. According to the pathogenesis of heatstroke, the following statement is incorrect ()
A. heatstroke
B. heat spasm
C. thermal collapse
D. solar eclipse
Full score: 4 points
19. Urine mercury is a judgment index of mercury load in the body, and the normal value in China is ().
A.0.0 1 volt mole
B.0.03 volt mole
C.0.04 volt mole
D.0.05 mmol
Full score: 4 points
20. All kinds of microorganisms and protozoa with decomposition ability are called ().
A. producers
B. Customers
C. decomposer
D. inorganic world