L2 All variants Flashcards
(60 cards)
1
Q
- The water transmission path is possible for transmission:
A
a) tularemia;
2
Q
- Characteristic features of water epidemics are:
A
b) chronic course;
3
Q
- Prolonged water taking with a high fluoride content leads to the development of:
A
a) fluorosis;
4
Q
- Flocculants are used:
A
b) for water disinfection;
5
Q
- What diseases belong to the group of endemic diseases?
A
a) molybdenum gout;
6
Q
- For what purposes does coagulation apply?
A
for clarification and discoloration of water.
7
Q
- Piestic (intermediate) waters, in contrast to surface waters, are characterized by:
A
b) high turbidity;
8
Q
- Chlorination of water with preammonization is used for water containing:
A
a) phenols;
9
Q
- The most unreliable waters in the sanitary-epidemiological relation are:
A
a) surface water;
10
Q
- Excessive silicon content in water can be a risk factor for development of:
A
a) endemic urolithiasis;
11
Q
- Indicate which of the listed indicators is not an indicator of water organoleptic properties:
A
c) hardness.
12
Q
- For disinfection of individual water resources, the follow-ing are used:
A
b) tableted preparations (pantocide, aqua-segment);
13
Q
- The term “contact tail” means:
A
a) isolated cases of infection in the home after antiepidemic measures in the center;
14
Q
- Development of water-nitrate methaemoglobinemia is due to:
A
c) the presence of nitrates in water.
15
Q
- In decentralized water supply we don’t use:
A
a) tubular wells;
16
Q
- Physical methods of water disinfection include:
A
b) ultrasound effect;
17
Q
- In chlorinating with usual doses of chlorine, the residual chlorine should not exceed:
A
a) 0.3-0.5 mg/l;
18
Q
- The reason for the endemic goiter development is:
A
c) iodine lack in water.
19
Q
- For domestic and drinking water supply we don’t use:
A
c) surface water.
20
Q
- The oligodynamic method of water disinfection is:
A
c) disinfection methods of individual water supplies.
21
Q
- The risk factor for the fluorosis development is the exces-sive content in water of:
A
a) fluorides;
22
Q
- Chemical (reagent) methods of water disinfection include:
A
a) boiling;
23
Q
- Special methods for improving water quality include:
A
b) filtration;
24
Q
- The chlorides content in drinking water should not
exceed:
A
a) 350 mg/l;
25
5. The disadvantage of surface water supply sources is:
c) possibility of microbial contamination of water.
26
6. Which of the following diseases can be transmitted by
| water?
c) typhus.
27
7. Mineralization of drinking water should be:
a) 5-100 mg/l;
28
8. Oligodynamic method of water disinfection (salts of silver, copper) is:
c) is used to disinfect individual water supplies.
29
9. Optimal indicator of total water hardness is:
a) 7 mEq/l;
30
10. Special methods for improving the water quality include:
a) chlorination;
31
11. Organoleptic indicators of water include:
a) sulfates content in water;
32
12. Removal of radioactive contaminants in water is carried out with the help of:
b) decontamination;
33
13. The difference between a centralized water supply
| system and a non-centralized system is:
c) the absence of a pipeline system.
34
14. The risk of gout develops when there is the excessive con-tent in water of:
c) selenium.
35
15. The disadvantage of slow filters is:
a) low productivity;
36
16. Chlorination of water with preammonization is applied:
a) in the presence of phenols;
37
17. Prolonged use of water with a low fluoride content leads to the development of:
c) tooth decay.
38
18. Intermediate waters:
a) lie deep (more than 100 m) between two watertight layers
39
19. The sulphates content in drinking water should not
| exceed:
a) 350 mg/l;
40
20. The following sources are not required pre-treatment and disinfection of water:
c) all underground sources.
41
1. For water with a pronounced smell, it is necessary to use the method of:
c) filtration.
42
2. With an iodine lack in water, there is a risk of develop-ment of:
a) endemic goiter;
43
3. Reagentless method of water disinfection is:
a) sonication;
44
4. Optimal fluorine concentration in water is:
b) 0.7 mg/l;
45
5. What kind of water is not used for organization of auton-omous household and drinking water supply?
c) intermediate pressure.
46
6. For disinfection of individual drinking water supplies, the following are used
a) tableted forms “AquaSept”, “Pantocide”;
47
7. Special methods for improving the quality of drinking wa-ter include:
a) chlorination with usual doses of chlorine;
48
8. Methemoglobinemia develops with the water taking with a high content in it of:
b) nitrates;
49
9. Flocculants are used for:
b) water disinfection;
50
10. The most reliable water in the sanitary-epidemiological respect are:
b) ground waters;
51
11. The oligodynamic method of water disinfection is:
b) special method for improving the quality of drinking water;
52
12. The characteristic features of water epidemics are:
a) chronic course;
53
13. Strontium rickets develops:
a) with a lack of strontium in water;
54
14. Water coagulation is used for:
b) clarification of water;
55
15. Requirement for slow filters is:
a) maturation of the active biological film;
56
16. The excess silicon content in water contributes to the de-velopment of:
c) endemic urolithiasis.
57
17. In decentralized water supply we use:
a) a distribution network;
58
18. Physical methods of water disinfection include:
a) ultrasound effect;
59
19. For normal chlorination, residual chlorine in water should not exceed:
b) 0.3-0.5 mg/l;
60
20. Which of the following diseases can be transmitted by wa-ter?2
c) typhus.
