What investigations are necessary for workers in eating places?
microbiological
parasitological
Ventilation is necessary in the warm kitchen
Before utilisation the raw eggs are treated with
Nessler reagent
Sodium bicarbonate and chloric substances
Storage of some egg-containing meals is forbidden
The workers in the eating places have personal healthy books
Indicate the exact definition of efficiency
ability to perform useful work
ability to perform work at all, after short training
ability to perform work with a certain power and quality for a given time
Tremometriya is a method for investigating:
the accuracy and coordination of movements
speed
time of reaction
The stability of clear vision is one of the indicators of visual fatigue:
Prevention of fatigue is provided through:
rational organisation of labor, physiological working postures and movements
exercises and drills
rational organisation of work and rest
Indicate what efficiency depends on:
physical and mental development of the person
sex and age
experience, habits and skills
physical endurance
health
When does the over-fatigue occur?
after poisoning the body with kenotoxins
after reducing the body’s energy reserves
after systematically starting work in residual fatigue
Do the signs of over fatigue disappear after the daily rest(dream)?
Which of these production criteria can report the occurrence of fatigue?
increase of accidents
increase of absences from work
reduction of labor activity (low efficiency)
Which tones of hearing sensitivity are reduced to first by intense noise exposition
high tones
medium tones
low tones
Which physical parameters does the harmful effect of noise depend on?
intensity
frequency
Indicate the exact characteristics of noise:
noise is any unwanted sound that adversely affects the human body
mechanical fluctuations With frequency 16-20 000 Hz
chaotic mix of sounds with varying frequency and intensity
According to the change of intensity in time the noise can be
permanent and impermanent (stable and unstable)
broadband and tonal
The most commonly used device to measure sound pressure is the sound-level meter:
According to the contact between human body and vibrating source, vibrations are:
horizontal, vertical
general, local, mixed
regular, impulse
Which of the hazards create the biggest professional risk in the textile industry?
Vibrations
Noise
Supersound
Determination of acetyl cholinesterase level is a medical test for evaluation of the effect of:
carbamate and organophosphorous pesticides exposure
thiocarbamate pesticides exposure
chloronitrophenol derivative exposure
Pesticides from class “I B Highly hazardous” have LD50 for the rat (oral):
5 mg/kg BW (body weight) or less
5 - 50 mg/kg BW
50 - 500 mg/kg BW
Pesticides from class “II Moderately hazardous” LD50 for the rat (oral)
Pesticides from class “III Slightly hazardous have LD50 for the rat (oral):
over 500 mg/kg BW
The types of personal protective equipment (PPE) required vary according to the toxicity of the pesticides:
There are the following major classifications of pesticides, the use of which depends on the intended application:
classification by usage
classification by chemical type
classification by hazard
What are anthropometric measurements?
height, weight, circumferences of the chest and head
assessment of the scoliosis
physical capacity
How often the children from 7 to 18 years have doctor examination?
Once a year
Once a month
Twice a year
The physiological basis of the daily regiment of the school children is the working dynamic stereotype
What does the medical examination (check-up) of the children include?
microbiological indices
anthropometric measurements
assessment of mental development
study of physical capacity
study of blood and urine
examination for intestinal parasites
doctor’s examination
dental examination
Which are the indicators for assessment of physical capacity?
muscle strength of the left and the right flexors of the fingers
How many degrees include the clinical examination of the size of increased thyroid gland?
three
two
five
Is it necessary to carry out medical examination (check-up) of the children?
Which are the basic principles of the physical inurement?
gradualness
orderliness
individual approach
variety of inurement factors
The main hygienic requirement in construction of kindergartens is
as the principle of group isolatlon of the children
the principle of common child care
the principle of health status of the children
For the students from primary clam must be and:
single-seated desks
two-seated desks
The basic parts of the school desk are:
differentiation
ischial distance
depth and height of the seat
back distance
Indicate the diseases with social importance during the school years:
obesity
allergic diseases
arterial hypertension
diabetes mellitus
