大学MOOC MineDustControl（矿井粉尘防治）(中国矿业大学)1205576801 最新慕课完整章节测试答案
10DustControlinMineralsMiningandProcessing(2)
文章目录
- 10DustControlinMineralsMiningandProcessing(2)
- 11DustControlinsurfaceMining
- 1Introduction
- 2DustandHealthy
- 3DustSamplingandQuantifying
- 4DustExplosionandPrevention
- 5Dustcontrolinsurfaceprocessindustries
- 6DustControlinCoalMining(1)–LongwallMining
- 7DustControlinCoalMining(2)–R&PMining
- 8DustControlinUndergroundStoneandMetalNon-metalmining
- 9DustControlinMineralsMiningandProcessing(1)
Chapter10Exam
1、判断题：
In order to realize the dust control benefits of the discharge cone, the loading spout must be properly positioned to minimize the chance of dust escaping into the ambient air during loading.
选项：
A: 正确
B: 错误
答案: 【 正确】
2、判断题：
For the most effective dust control and to prevent clogging of the loading spout, it is important that the spout position be periodically raised as the height of the loaded material increases.
选项：
A: 正确
B: 错误
答案: 【 正确】
3、判断题：
A belt wash system sprays the conveyor belt with cement while simultaneously scraping it to remove the product.
选项：
A: 正确
B: 错误
答案: 【 错误】
4、判断题：
Screw conveyors are totally opened except at the ends.
选项：
A: 正确
B: 错误
答案: 【 错误】
5、判断题：
Skirtboards are employed to retain material on the belt after leaving the loading chute and until the material reaches belt speed.
选项：
A: 正确
B: 错误
答案: 【 正确】
6、判断题：
At mineral processing operations ,workers can not exposure dust from contaminated work clothing.
选项：
A: 正确
B: 错误
答案: 【 错误】
7、判断题：
The basic principle behind the total structure ventilation design is to use inside air to sweep up through a building to clear and remove the dust-laden air.
选项：
A: 正确
B: 错误
答案: 【 错误】
8、判断题：
The four factors translate to the four dust control measures:Surface roughness,water,coatings,and wind.
选项：
A: 正确
B: 错误
答案: 【 错误】
9、填空题：
The is designed to transfer product from a plant/storage container into the vehicle that will be used to transport the product.
答案: 【 loading spout】
10、填空题：
During the bulk loading of product, dust contained within the product can be liberated and emitted into the ambient air as the product falls from the to the .
答案: 【 loadout area ,transport container】
11、填空题：
Proper selection of the correct type of equipment is a function of the specific application, taking into account the material to be transferred, , and nature of the transfer.
答案: 【 transfer distance】
12、填空题：
In almost all cases, a worker uses an to manually exhaust the product and dust into the collector system.
答案: 【 exhaust system collector device】
13、填空题：
The most common method of dust control on haul roads is using with water being the most common.
答案: 【 dust suppressants】
TestBuckloading
1、判断题：
To address the above dust emissions during bulk loading, a common control measure is to equip the loading spout with a dry dust collection system.
选项：
A: 正确
B: 错误
答案: 【 正确】
2、判断题：
Another modification that can be made in an effort to reduce dust emissions during bulk loading is the utilization of the loading spout.
选项：
A: 正确
B: 错误
答案: 【 错误】
TestConveying
1、多选题：
There are three primary root causes for fugitive dust emissions associated with conveyor belts:
选项：
A: spillage
B: carryback
C: small dust
D: airborne dust
答案: 【 spillage;
carryback;
airborne dust】
2、判断题：
Belt conveyors are among the most commonly used piece of equipment at mineral processing operations.
选项：
A: 正确
B: 错误
答案: 【 正确】
TestHaulRoads,stockpilesandopenarea
1、判断题：
Barriers can not be effective in reducing the amount of windblown soil up to a height of 6 feet.
选项：
A: 正确
B: 错误
答案: 【 错误】
2、填空题：
The mixes with the material to create a crust which can be resistant to wind erosion.
答案: 【 water】
TestSecondarysources
1、判断题：
Workers performing maintenance can be exposed to higher than normal dust concentrations because the maintenance task may involve working in areas where dust controls are not functioning effectively, working on highly contaminated equipment, or the work may have to be performed in unusual nonroutine operating conditions.
选项：
A: 正确
B: 错误
答案: 【 正确】
2、判断题：
The first strategy to lower dust exposures in any structure is to have an effective primary dust control plan that captures major dust sources at their point of origin, before they are allowed to escape out into the plant and contaminate workers.
选项：
A: 正确
B: 错误
答案: 【 正确】
11DustControlinsurfaceMining
Chapter11Exam
1、单选题：
Air filtration is often part of the as an engineering control for airborne dusts.
选项：
A: HVAP system
B: HVAM system
C: HVAC system
D: HNAP system
答案: 【 HVAC system】
2、单选题：
Dust emission reductions of greater than 63% were measured by the collector discharge dump after installing an extended shroud near ground level Maintain a collector-to-bailing airflow ratio of at least .
选项：
A: 1:3
B: 3:1
C: 4:1
D: 1:4
答案: 【 3:1】
3、单选题：
A is recommended to reduce the dust liberated due to rollback under the dumping mechanism.
选项：
A: water spray system
B: tire-stop water spray system
C: local exhaust ventilation system
D: tire water spray system
答案: 【 tire-stop water spray system】
4、多选题：
Many practical areas of engineering controls designed to mitigate exposure of surface mine workers to all airborne dusts, including silica, are：
选项：
A: drill dust collection systems
B: enclosed cab filtration systems
C: controlling dust on unpaved haulage roads
D: controlling dust at the primary hopper dump
答案: 【 drill dust collection systems;
enclosed cab filtration systems;
controlling dust on unpaved haulage roads;
controlling dust at the primary hopper dump】
5、判断题：
Adding excessive water down the hole can cause operational problems with appreciable improvement in dust control.
选项：
A: 正确
B: 错误
答案: 【 错误】
6、判断题：
Enclosed cab filtration systems are one of the mainstay engineering controls for reducing mobile equipment operators’ exposure to airborne dust at surface mines.
选项：
A: 正确
B: 错误
答案: 【 正确】
7、判断题：
Enclosed cabs with heating, ventilation, and air conditioning (HVAC) systems are typically integrated into the drills and mobile equipment to protect the operator from the inside environment.
选项：
A: 正确
B: 错误
答案: 【 错误】
8、判断题：
The most common method of haul road dust control is surface wetting with plain water, but others include adding hygroscopic salts, surfactants, soil cements, bitumens, and films (polymers) to the road surface.
选项：
A: 正确
B: 错误
答案: 【 正确】
9、判断题：
Decrease distance between vehicles traveling the haul road can controll haulage road dust exposures.
选项：
A: 正确
B: 错误
答案: 【 正确】
10、判断题：
A water spray system can be used to filter the dust-laden air from the enclosed hopper area.
选项：
A: 正确
B: 错误
答案: 【 错误】
TestCabfiltrationsystem
1、多选题：
Enclosed cabs with , , and systems are typically integrated into the drills and mobile equipment to protect the operator from the outside environment.
选项：
A: heating
B: ventilation
C: drill stem
D: air conditioning
答案: 【 heating;
ventilation;
air conditioning】
2、判断题：
Use an efficient respirable dust recirculation filter is one of the key performance factors for enclosed cab filtration systems.
选项：
A: 正确
B: 错误
答案: 【 正确】
TestDrilldustcollections
1、单选题：
is another drill dust collection method and involves injecting water into the bailing airflow traveling down the drill stem.
选项：
A: Wet suppression
B: Dry drill dust collection
C: Dry suppression
D: Wet drill dust collection
答案: 【 Wet suppression】
2、判断题：
Dust generated by compressed air (bailing airflow) flushing the drill cuttings from the hole being drilled.
选项：
A: 正确
B: 错误
答案: 【 正确】
TestHaulageroaddustcontrol
1、单选题：
Which is not the method of haul road dust control?
选项：
A: surface wetting with plain water
B: adding hygroscopic salts to the road surface
C: adding films (polymers) to the road surface
D: adding soil to the road surface
答案: 【 adding soil to the road surface】
2、判断题：
Off-road haul trucks used in the mining industry typically contribute less of the dust emissions at a mine site.
选项：
A: 正确
B: 错误
答案: 【 错误】
TestHopperdumpcontrol
1、判断题：
Dust in the ore is released from the large volume of ore product being dumped in a long period of time.
选项：
A: 正确
B: 错误
答案: 【 错误】
2、判断题：
Several effective control methods include enclosing the hopper dump using water sprays to suppress and contain the dust from rolling back out of the enclosure.
选项：
A: 正确
B: 错误
答案: 【 正确】
1Introduction
Chapter1Exam
1、单选题：
What is the size of the visual dust?
选项：
A: <0.25 μm
B: >0.25 and <10μm
C: >1μm
D: >10μm
答案: 【 >10μm】
2、单选题：
What are the dust classifications？
选项：
A: Size of aerosol particles
B: Light drizzle
C: Respirable dust
D: Normal atmospheric dusts
答案: 【 Size of aerosol particles】
3、多选题：
Nuisance dusts types including:
选项：
A: Gypsum
B: Kaolin
C: Limestone
D: Organic
答案: 【 Gypsum;
Kaolin;
Limestone】
4、多选题：
Explosive dusts types including:
选项：
A: Metallic dusts (magnesium, aluminum, zinc, tin, iron)
B: Coal (bituminous, lignite)
C: Sulfide ores