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起止时间:2020-09-07到2020-12-31
更新状态:已完结
1 Introduction Chapter 1 Exam
1、 What is the size of the visual dust?
A: <0.25 μm
B: >0.25 and <10μm
C: >1μm
D: >10μm
答案: >10μm
2、 What are the dust classifications？
A: Size of aerosol particles
B: Light drizzle
C: Respirable dust
D: Normal atmospheric dusts
答案: Size of aerosol particles
3、 Nuisance dusts types including:
A: Gypsum
B: Kaolin
C: Limestone
D: Organic
答案: Gypsum;
Kaolin;
Limestone
4、 Explosive dusts types including:
A: Metallic dusts (magnesium, aluminum, zinc, tin, iron)
B: Coal (bituminous, lignite)
C: Sulfide ores
D: Organic dusts
答案: Metallic dusts (magnesium, aluminum, zinc, tin, iron);
Coal (bituminous, lignite);
Sulfide ores;
Organic dusts
5、 The natural atmosphere that we breathe contains not only gaseous constituents but also large numbers of liquid and solid particles.
A:正确
B:错误
答案: 正确
6、 Particles do not become visible to the naked eye until they are more than 100 microns equivalent diameter.
A:正确
B:错误
答案: 错误
7、 Mine dusts vary widely in shape, dependent largely upon the prevalent mineral constituents.
A:正确
B:错误
答案: 正确
8、 The interaction of small particles with light is not a sensitive function of particle size and the optical properties.
A:正确
B:错误
答案: 错误
9、 Dusts of ores of beryllium, arsenic, lead, uranium, radium, thorium, chromium, vanadium, mercury, cadmium, antimony, selenium, manganese, tungsten, nickel, silver.
A:正确
B:错误
答案: 正确
10、 The soluble salts of halite (NaCl) and（ ）can occasionally cause skin irritations, particularly around hatbands or tightly fitting dust masks.
答案: potash(KCl)
2 Dust and Healthy Chapter 2 Exam
1、 Silicosis that develops___years after first exposure to higher concentrations of silica dust.
A: <5
B: 5-10
C: 10-15
D: >15
答案: 5-10
2、 PM10 is defined as particulate matter with a diameter less than or equal to ( )?
A: 10μm
B: 10cm
C: 10mm
D: 10nm
答案: 10μm
3、 What are the the form of silica？
A: alpha quartz
B: beta quartz
C: tridymite
D: Normal atmospheric dusts
答案: alpha quartz;
beta quartz;
tridymite
4、 Diagnosis Methods:
A: Chest Radiography
B: Lung biopsy
C: CT
D: Pulmonary function tests and blood tests
答案: Chest Radiography;
Lung biopsy;
CT;
Pulmonary function tests and blood tests
5、 Classification of silicosis types including:
A: Chronic simple silicosis
B: Accelerated silicosis
C: Complicated silicosis
D: Acute silicosis
答案: Chronic simple silicosis;
Accelerated silicosis;
Complicated silicosis;
Acute silicosis
6、 Treatment of silicosis may include use of bronchodilators (medications to open the airways) or supplemental oxygen.
A:正确
B:错误
答案: 正确
7、 Treatment of silicosis may include use of bronchodilators (medications to open the airways) or supplemental oxygen.
A:正确
B:错误
答案: 正确
8、 PNF can occur in either simple or accelerated silicosis but is more common in the accelerated form.
A:正确
B:错误
答案: 错误
9、 Quartz is a common component of rocks; consequently, mine workers are potentially exposed to quartz dust when rock is cut, drilled, crushed, and transported.
A:正确
B:错误
答案: 正确
10、 A worker may develop one of three types of silicosis, depending on the airborne concentrations of respirable crystalline silica: (1)chronic slicosis(2) acelerated slicosis(3)( ) scosis.
答案: acute
3 Dust Sampling and Quantifying Chapter 3 Exam
1、 The 10-mm Dorr-Oliver cyclone separates the oversize dust from the respirable fraction (usually considered to have an aerodynamic diameter of ( )or less).
A: 10μm
B: 10pm
C: 15 pm
D: 20 pm
答案: 10pm
2、 PM10 is defined as particulate matter with a diameter less than or equal to ( )?
A: 10μm
B: 10cm
C: 10nm
D: 10mm
答案: 10μm
3、 The most common type of sampler used in the mining industry is the gravimetric sampler.
A:正确
B:错误
答案: 正确
4、 To determine the silica content of a gravimetric sample, the filter does not need to be sent to an accredited laboratory for analysis.
A:正确
B:错误
答案: 错误
5、 Because of the great number of variables encountered in mining operations that can impact airborne dust levels, it is highly desirable to place multiple gravimetric samplers at a single location and calculate an average dust concentration.
A:正确
B:错误
答案: 正确
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