【Learn Ethylene Together】Five questions per day to easily learn about ethylene 08
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【Learning about Ethylene Together】Five questions per day to easily learn about ethylene. 08 36. The main component of natural gas is ( ), and from a chemical composition perspective, it can be divided into two major categories: ( ) and ( ). 37. The pressure for the hydrostatic test is （ ） times the normal operating pressure, while the pressure for the airtightness test is （ ） times the normal operating pressure. 38. The main technical parameters of a safety valve include ( ), ( ), and ( ). 39. The relationship among atmospheric pressure, absolute pressure, and gauge pressure is ( ). 40. The basic characteristics of combustion are ( ), ( ), ( ). 36. The main component of natural gas is ( ), and from a chemical composition perspective, it can be divided into two major categories: ( ) and ( ). Methane, dry natural gas, wet natural gas. 37. The pressure used for the hydrostatic test is （） times the normal operating pressure, while the pressure used for the airtightness test is （） times the normal operating pressure. 1.25 1.15 38. The main technical parameters of a safety valve include ( ), ( ) and ( ). Pressure parameters, dimensional parameters, discharge volume. 39. The relationship among atmospheric pressure, absolute pressure, and gauge pressure is ( ). Absolute pressure = atmospheric pressure + gauge pressure. 40. The basic characteristics of combustion are ( ), ( ), ( ). Exothermic, emits light, produces new substances
36. The main component of natural gas is (methane). Based on their chemical composition, it can be divided into two categories: (dry natural gas) and (wet natural gas). 37. The pressure for the hydrostatic test is (1.25) times the normal operating pressure, while the pressure for the airtightness test is (1.15) times the normal operating pressure. 38. The main technical parameters of a safety valve are (pressure), (size), and (discharge volume). 39. The relationship among atmospheric pressure, absolute pressure, and gauge pressure is (atmospheric pressure = absolute pressure – gauge pressure). 40. The basic characteristics of combustion are (heat release), (light emission), and (formation of new substances).
36. The main component of natural gas is (methane). Based on their chemical composition, it can be divided into two categories: (dry natural gas) and (wet natural gas). 37. The pressure for the hydrostatic test is (1.25) times the normal operating pressure, while the pressure for the airtightness test is (1.15) times the normal operating pressure. 38. The main technical parameters of a safety valve are (pressure), (size), and (discharge volume). 39. The relationship among atmospheric pressure, absolute pressure, and gauge pressure is (atmospheric pressure = absolute pressure – gauge pressure). 40. The basic characteristics of combustion are (heat release), (light emission), and (formation of new substances).
37, incorrect; design pressure is 1. 5 times the design pressure 1. 0 times
38, launch pressure, reseat pressure, caliber
36. The main component of natural gas is (methane). Based on their chemical composition, it can be divided into two categories: (dry natural gas) and (wet natural gas). 37. The pressure for the hydrostatic test is (1.25) times the normal operating pressure, while the pressure for the airtightness test is (1.15) times the normal operating pressure. 38. The main technical parameters of a safety valve are (pressure), (size), and (discharge volume). 39. The relationship among atmospheric pressure, absolute pressure, and gauge pressure is (atmospheric pressure = absolute pressure – gauge pressure). 40. The basic characteristics of combustion are (heat release), (light emission), and (formation of new substances).
36. The main component of natural gas is (methane). Based on their chemical composition, it can be divided into two categories: (dry natural gas) and (wet natural gas). 37. The pressure for the hydrostatic test is (1.25) times the normal operating pressure, while the pressure for the airtightness test is (1.15) times the normal operating pressure. 38. The main technical parameters of a safety valve are (pressure), (size), and (discharge volume). 39. The relationship among atmospheric pressure, absolute pressure, and gauge pressure is (atmospheric pressure = absolute pressure – gauge pressure). 40. The basic characteristics of combustion are (heat release), (light emission), and (formation of new substances).
36. The main component of natural gas is (methane). Based on their chemical composition, it can be divided into two categories: (dry natural gas) and (wet natural gas). 37. The pressure for the hydrostatic test is (1.25) times the normal operating pressure, while the pressure for the airtightness test is (1.15) times the normal operating pressure. 38. The main technical parameters of a safety valve are (pressure), (size), and (discharge volume). 39. The relationship among atmospheric pressure, absolute pressure, and gauge pressure is (atmospheric pressure = absolute pressure – gauge pressure). 40. The basic characteristics of combustion are (heat release), (light emission), and (formation of new substances).