TEXAS WASTEWATER CLASS C NEWEST ACTUAL EXAM
COMPLETE 300 QESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
随着信息技术的迅猛发展，数字
What device(s) can be used as时代已经成为现代社会的标志性
an emergency shut-off for the drive unit of a circular clarifier? - (answer)
Shear Pins 特征。互联网、大数据、人工智
能等技术的普及和应用，不仅深
You are the operator-on-duty.刻地改变了人类的生产方式、生
The alarm for the fire detector in the Belt Filter Press Control Room goes
off. What type of fire extinguisher would you take to respond to this alarm? - (answer) Class C
活方式和思维方式，也在全球范
围内引发了一系列深远的社会变
When working in an area with迁。在这样的背景下，探讨数字
two or more floor coverings (for example, grating and checker-plate), be
sure that they are always _____. - (answer) Secured together
时代对社会的影响及其对人类未
来的意义，具有重要的现实意义
和理论价值。随着信息技术的迅
When working in confined spaces where flammable gases may be present, use only toolsmade of -
(answer) A non sparking alloy
猛发展，数字时代已经成为现代
社会的标志性特征。互联网、大
A treatment plant should have a valve exercise program in which all plant valves are exercised (opened
数据、人工智能等技术的普及和
and closed) - (answer) Once a year
应用，不仅深刻地改变了人类的
生产方式、生活方式和思维方式
Immediate first aid for burns is to? - (answer) Flood with cold water
，也在全球范围内引发了一系列
深远的社会变迁。在这样的背景
下，探讨数字时代对社会的影响
Recommended personal hygiene practices to minimize the risk of being infected by wastewater
pathogens include - (answer) Changing out of your work clothes and showering before leaving work
及其对人类未来的意义，具有重
要的现实意义和理论价值。随着
What is the best protection against the risk of exposure to infections and disease at a wastewater plant?
信息技术的迅猛发展，数字时代
- (answer) Personal Hygenie
已经成为现代社会的标志性特征
。互联网、大数据、人工智能等
Regarding fire extinguisher training in the workplace. The employer must provide what? - (answer) A
技术的普及和应用，不仅深刻地
written and practiced emergency action plan.
改变了人类的生产方式、生活方
式和思维方式，也在全球范围内
The combination of methane and which other gas can be very combustible? - (answer) Oxygen
引发了一系列深远的社会变迁。
在这样的背景下，探讨数字时代
对社会的影响及其对人类未来的
意义，具有重要的现实意义和理
论价值。
,In what location of the sewer manhole would methane gas be found? - (answer) At the top
Which type of fire is safe for a随着信息技术的迅猛发展，数字
pressurized water extinguisher or water hose to be used on? - (answer)
Brush
时代已经成为现代社会的标志性
特征。互联网、大数据、人工智
Mixing dry granular chlorine (HTH) with petroleum products can cause which of the following? -
能等技术的普及和应用，不仅深
(answer) Create a fire or explosive condition
刻地改变了人类的生产方式、生
活方式和思维方式，也在全球范
The fusible plugs found on a 150lb cylinders and one-ton chlorinecontainers are designed to melt at
围内引发了一系列深远的社会变
what temperature range? - (answer) 158-165 degrees Fahrenheit
迁。在这样的背景下，探讨数字
时代对社会的影响及其对人类未
In the event of a large leak of chlorine is occurring, what is the first action the operator should take? -
(answer) Immediately notify 来的意义，具有重要的现实意义
local fire and police departments
和理论价值。随着信息技术的迅
猛发展，数字时代已经成为现代
A Class C type fire involves? - (answer) Electrical equipment
社会的标志性特征。互联网、大
数据、人工智能等技术的普及和
A common fire extinguisher is AB or ABC type. What is the media contained inside these fire
应用，不仅深刻地改变了人类的
extinguishers? - (answer) Dry Powder
生产方式、生活方式和思维方式
，也在全球范围内引发了一系列
This toxic gas impairs one's sense of smell rapidly at high concentrations as it paralyses the respiratory
深远的社会变迁。在这样的背景
organs. At lower concentrations it has a rotten egg odor. - (answer) Hydrogen Sulfide Gas
下，探讨数字时代对社会的影响
及其对人类未来的意义，具有重
Coliform bacteria are: - (answer) More resistant to chlorination than pathogenic bacteria
要的现实意义和理论价值。随着
信息技术的迅猛发展，数字时代
Coliform bacteria are: - (answer) Indicators
已经成为现代社会的标志性特征
。互联网、大数据、人工智能等
E. Coli results must always be技术的普及和应用，不仅深刻地
higher or lower than fecal coliform results? - (answer) Lower
改变了人类的生产方式、生活方
式和思维方式，也在全球范围内
Waterborne diseases and illnesses common to the wastewater industryinclude dysentery, hepatitis,
polio, typhoid, and what other disease? - (answer) Cholera
引发了一系列深远的社会变迁。
在这样的背景下，探讨数字时代
对社会的影响及其对人类未来的
意义，具有重要的现实意义和理
论价值。
,How many fusible plugs are in a 1 ton chlorine container? - (answer) 6
What is the proper amount of随着信息技术的迅猛发展，数字
oxygen to enter a confined space? - (answer) 19.5% - 23.5%
时代已经成为现代社会的标志性
特征。互联网、大数据、人工智
Which safety procedure can prevent accidental re-energizing of electrical energy while maintaining a
piece of equipment? - (answer) Use proper LO/TO procedures
能等技术的普及和应用，不仅深
刻地改变了人类的生产方式、生
活方式和思维方式，也在全球范
If a leak of liquid chlorine occurs, one part of the liquid chlorine can expand to how many parts of
gaseous chlorine at room temperature and average barometric pressure? - (answer) 457 parts of gas.
围内引发了一系列深远的社会变
迁。在这样的背景下，探讨数字
时代对社会的影响及其对人类未
Chlorine gas is how many times heavier than air? - (answer) 2.5 times
来的意义，具有重要的现实意义
和理论价值。随着信息技术的迅
Methane gas is lighter than air - (answer) True
猛发展，数字时代已经成为现代
A pump's seal water pressure社会的标志性特征。互联网、大
should be set at - (answer) 5 to 10 psi more than the pump operating
discharge pressure 数据、人工智能等技术的普及和
应用，不仅深刻地改变了人类的
What does a gradual increase生产方式、生活方式和思维方式
in the bearing temperature of a centrifugal blower indicate? - (answer)
There is a problem with the bearing lubrication or connection
，也在全球范围内引发了一系列
深远的社会变迁。在这样的背景
How often should the packing下，探讨数字时代对社会的影响
on a gate valve be replaced? - (answer) As required
及其对人类未来的意义，具有重
要的现实意义和理论价值。随着
What is surging in a centrifugal blower? - (answer) When the blower's discharge pressure is less than
the aeration system's backpressure
信息技术的迅猛发展，数字时代
已经成为现代社会的标志性特征
。互联网、大数据、人工智能等
Pumps are often required to bring wastewater into a treatment plant. What types of pumps are typically
used to lift influent wastewater? - (answer) Centrifugal
技术的普及和应用，不仅深刻地
改变了人类的生产方式、生活方
If a centrifugal pump loses its式和思维方式，也在全球范围内
prime after starting, what is the most probable cause? - (answer) Air
leaks into the pump through stuffing boxes
引发了一系列深远的社会变迁。
在这样的背景下，探讨数字时代
对社会的影响及其对人类未来的
意义，具有重要的现实意义和理
论价值。
, The casing surrounding a pump impeller that collects the water discharged by the impeller is called a
__________. - (answer) Volute
随着信息技术的迅猛发展，数字
A _____ is installed on the pump discharge piping to prevent water from flowing back across a pump
时代已经成为现代社会的标志性
when it is off. - (answer) Check Valve
特征。互联网、大数据、人工智
能等技术的普及和应用，不仅深
Why are check valves used in conjunction with centrifugal pumps? - (answer) To prevent water in the
suction line from flowing back刻地改变了人类的生产方式、生
into the wetwell
活方式和思维方式，也在全球范
围内引发了一系列深远的社会变
What separates the impeller from the volute and prevents backflow in a centrifugal pump? - (answer)
Wear Rings 迁。在这样的背景下，探讨数字
时代对社会的影响及其对人类未
来的意义，具有重要的现实意义
Cavitation is the formation and collapse of a gas pocket or bubble on the blade of a pump's impeller. -
(answer) True 和理论价值。随着信息技术的迅
猛发展，数字时代已经成为现代
Bar screens must be cleaned 社会的标志性特征。互联网、大
frequently to prevent (choose the most correct answer) - (answer)
数据、人工智能等技术的普及和
Excess head loss (slowing down the water moving through the pipe)
应用，不仅深刻地改变了人类的
生产方式、生活方式和思维方式
What is an air-gap device used for? - (answer) Backflow prevention
，也在全球范围内引发了一系列
Flow - (answer) 深远的社会变迁。在这样的背景
The amount of fluid to be pumped
下，探讨数字时代对社会的影响
及其对人类未来的意义，具有重
Head - (answer) The extent or distance to which fluid is to be exported.
要的现实意义和理论价值。随着
信息技术的迅猛发展，数字时代
The discharge of a centrifugal pump: - (answer) Decreases with the increase of head, and increases
已经成为现代社会的标志性特征
with the decrease in head
。互联网、大数据、人工智能等
技术的普及和应用，不仅深刻地
In a centrifugal pump, leakage is prevented by - (answer) Wear rings
改变了人类的生产方式、生活方
式和思维方式，也在全球范围内
Valves should be closed slowly to prevent: - (answer) Water Hammer
引发了一系列深远的社会变迁。
在这样的背景下，探讨数字时代
对社会的影响及其对人类未来的
意义，具有重要的现实意义和理
论价值。
COMPLETE 300 QESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
随着信息技术的迅猛发展，数字
What device(s) can be used as时代已经成为现代社会的标志性
an emergency shut-off for the drive unit of a circular clarifier? - (answer)
Shear Pins 特征。互联网、大数据、人工智
能等技术的普及和应用，不仅深
You are the operator-on-duty.刻地改变了人类的生产方式、生
The alarm for the fire detector in the Belt Filter Press Control Room goes
off. What type of fire extinguisher would you take to respond to this alarm? - (answer) Class C
活方式和思维方式，也在全球范
围内引发了一系列深远的社会变
When working in an area with迁。在这样的背景下，探讨数字
two or more floor coverings (for example, grating and checker-plate), be
sure that they are always _____. - (answer) Secured together
时代对社会的影响及其对人类未
来的意义，具有重要的现实意义
和理论价值。随着信息技术的迅
When working in confined spaces where flammable gases may be present, use only toolsmade of -
(answer) A non sparking alloy
猛发展，数字时代已经成为现代
社会的标志性特征。互联网、大
A treatment plant should have a valve exercise program in which all plant valves are exercised (opened
数据、人工智能等技术的普及和
and closed) - (answer) Once a year
应用，不仅深刻地改变了人类的
生产方式、生活方式和思维方式
Immediate first aid for burns is to? - (answer) Flood with cold water
，也在全球范围内引发了一系列
深远的社会变迁。在这样的背景
下，探讨数字时代对社会的影响
Recommended personal hygiene practices to minimize the risk of being infected by wastewater
pathogens include - (answer) Changing out of your work clothes and showering before leaving work
及其对人类未来的意义，具有重
要的现实意义和理论价值。随着
What is the best protection against the risk of exposure to infections and disease at a wastewater plant?
信息技术的迅猛发展，数字时代
- (answer) Personal Hygenie
已经成为现代社会的标志性特征
。互联网、大数据、人工智能等
Regarding fire extinguisher training in the workplace. The employer must provide what? - (answer) A
技术的普及和应用，不仅深刻地
written and practiced emergency action plan.
改变了人类的生产方式、生活方
式和思维方式，也在全球范围内
The combination of methane and which other gas can be very combustible? - (answer) Oxygen
引发了一系列深远的社会变迁。
在这样的背景下，探讨数字时代
对社会的影响及其对人类未来的
意义，具有重要的现实意义和理
论价值。
,In what location of the sewer manhole would methane gas be found? - (answer) At the top
Which type of fire is safe for a随着信息技术的迅猛发展，数字
pressurized water extinguisher or water hose to be used on? - (answer)
Brush
时代已经成为现代社会的标志性
特征。互联网、大数据、人工智
Mixing dry granular chlorine (HTH) with petroleum products can cause which of the following? -
能等技术的普及和应用，不仅深
(answer) Create a fire or explosive condition
刻地改变了人类的生产方式、生
活方式和思维方式，也在全球范
The fusible plugs found on a 150lb cylinders and one-ton chlorinecontainers are designed to melt at
围内引发了一系列深远的社会变
what temperature range? - (answer) 158-165 degrees Fahrenheit
迁。在这样的背景下，探讨数字
时代对社会的影响及其对人类未
In the event of a large leak of chlorine is occurring, what is the first action the operator should take? -
(answer) Immediately notify 来的意义，具有重要的现实意义
local fire and police departments
和理论价值。随着信息技术的迅
猛发展，数字时代已经成为现代
A Class C type fire involves? - (answer) Electrical equipment
社会的标志性特征。互联网、大
数据、人工智能等技术的普及和
A common fire extinguisher is AB or ABC type. What is the media contained inside these fire
应用，不仅深刻地改变了人类的
extinguishers? - (answer) Dry Powder
生产方式、生活方式和思维方式
，也在全球范围内引发了一系列
This toxic gas impairs one's sense of smell rapidly at high concentrations as it paralyses the respiratory
深远的社会变迁。在这样的背景
organs. At lower concentrations it has a rotten egg odor. - (answer) Hydrogen Sulfide Gas
下，探讨数字时代对社会的影响
及其对人类未来的意义，具有重
Coliform bacteria are: - (answer) More resistant to chlorination than pathogenic bacteria
要的现实意义和理论价值。随着
信息技术的迅猛发展，数字时代
Coliform bacteria are: - (answer) Indicators
已经成为现代社会的标志性特征
。互联网、大数据、人工智能等
E. Coli results must always be技术的普及和应用，不仅深刻地
higher or lower than fecal coliform results? - (answer) Lower
改变了人类的生产方式、生活方
式和思维方式，也在全球范围内
Waterborne diseases and illnesses common to the wastewater industryinclude dysentery, hepatitis,
polio, typhoid, and what other disease? - (answer) Cholera
引发了一系列深远的社会变迁。
在这样的背景下，探讨数字时代
对社会的影响及其对人类未来的
意义，具有重要的现实意义和理
论价值。
,How many fusible plugs are in a 1 ton chlorine container? - (answer) 6
What is the proper amount of随着信息技术的迅猛发展，数字
oxygen to enter a confined space? - (answer) 19.5% - 23.5%
时代已经成为现代社会的标志性
特征。互联网、大数据、人工智
Which safety procedure can prevent accidental re-energizing of electrical energy while maintaining a
piece of equipment? - (answer) Use proper LO/TO procedures
能等技术的普及和应用，不仅深
刻地改变了人类的生产方式、生
活方式和思维方式，也在全球范
If a leak of liquid chlorine occurs, one part of the liquid chlorine can expand to how many parts of
gaseous chlorine at room temperature and average barometric pressure? - (answer) 457 parts of gas.
围内引发了一系列深远的社会变
迁。在这样的背景下，探讨数字
时代对社会的影响及其对人类未
Chlorine gas is how many times heavier than air? - (answer) 2.5 times
来的意义，具有重要的现实意义
和理论价值。随着信息技术的迅
Methane gas is lighter than air - (answer) True
猛发展，数字时代已经成为现代
A pump's seal water pressure社会的标志性特征。互联网、大
should be set at - (answer) 5 to 10 psi more than the pump operating
discharge pressure 数据、人工智能等技术的普及和
应用，不仅深刻地改变了人类的
What does a gradual increase生产方式、生活方式和思维方式
in the bearing temperature of a centrifugal blower indicate? - (answer)
There is a problem with the bearing lubrication or connection
，也在全球范围内引发了一系列
深远的社会变迁。在这样的背景
How often should the packing下，探讨数字时代对社会的影响
on a gate valve be replaced? - (answer) As required
及其对人类未来的意义，具有重
要的现实意义和理论价值。随着
What is surging in a centrifugal blower? - (answer) When the blower's discharge pressure is less than
the aeration system's backpressure
信息技术的迅猛发展，数字时代
已经成为现代社会的标志性特征
。互联网、大数据、人工智能等
Pumps are often required to bring wastewater into a treatment plant. What types of pumps are typically
used to lift influent wastewater? - (answer) Centrifugal
技术的普及和应用，不仅深刻地
改变了人类的生产方式、生活方
If a centrifugal pump loses its式和思维方式，也在全球范围内
prime after starting, what is the most probable cause? - (answer) Air
leaks into the pump through stuffing boxes
引发了一系列深远的社会变迁。
在这样的背景下，探讨数字时代
对社会的影响及其对人类未来的
意义，具有重要的现实意义和理
论价值。
, The casing surrounding a pump impeller that collects the water discharged by the impeller is called a
__________. - (answer) Volute
随着信息技术的迅猛发展，数字
A _____ is installed on the pump discharge piping to prevent water from flowing back across a pump
时代已经成为现代社会的标志性
when it is off. - (answer) Check Valve
特征。互联网、大数据、人工智
能等技术的普及和应用，不仅深
Why are check valves used in conjunction with centrifugal pumps? - (answer) To prevent water in the
suction line from flowing back刻地改变了人类的生产方式、生
into the wetwell
活方式和思维方式，也在全球范
围内引发了一系列深远的社会变
What separates the impeller from the volute and prevents backflow in a centrifugal pump? - (answer)
Wear Rings 迁。在这样的背景下，探讨数字
时代对社会的影响及其对人类未
来的意义，具有重要的现实意义
Cavitation is the formation and collapse of a gas pocket or bubble on the blade of a pump's impeller. -
(answer) True 和理论价值。随着信息技术的迅
猛发展，数字时代已经成为现代
Bar screens must be cleaned 社会的标志性特征。互联网、大
frequently to prevent (choose the most correct answer) - (answer)
数据、人工智能等技术的普及和
Excess head loss (slowing down the water moving through the pipe)
应用，不仅深刻地改变了人类的
生产方式、生活方式和思维方式
What is an air-gap device used for? - (answer) Backflow prevention
，也在全球范围内引发了一系列
Flow - (answer) 深远的社会变迁。在这样的背景
The amount of fluid to be pumped
下，探讨数字时代对社会的影响
及其对人类未来的意义，具有重
Head - (answer) The extent or distance to which fluid is to be exported.
要的现实意义和理论价值。随着
信息技术的迅猛发展，数字时代
The discharge of a centrifugal pump: - (answer) Decreases with the increase of head, and increases
已经成为现代社会的标志性特征
with the decrease in head
。互联网、大数据、人工智能等
技术的普及和应用，不仅深刻地
In a centrifugal pump, leakage is prevented by - (answer) Wear rings
改变了人类的生产方式、生活方
式和思维方式，也在全球范围内
Valves should be closed slowly to prevent: - (answer) Water Hammer
引发了一系列深远的社会变迁。
在这样的背景下，探讨数字时代
对社会的影响及其对人类未来的
意义，具有重要的现实意义和理
论价值。
