题目内容
（请给出正确答案）
A、diameter and direction of underground oil and gas recovery pipeline
B、selection of quick joints
C、working performance of P/V valve
D、construction quality problem
E、staff education
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更多“The recovery effect of oil and gas discharged from gas stations depends on （)”相关的问题
A、Design
B、Implementation
C、Maintenance
D、Specification
A、Install A fitting adapter at the nozzle of the fuel gun
B、Use adaptor (seal assembly) to seal the oil suction hole before and after
C、The adapter is connected to the gas-liquid ratio tester through a hose
D、The recovered airflow is first measured through the gas-liquid ratio tester, and then enters the oil-gas collection hole on the barrel of the refueling gun
E、Calculate the ratio of extracted air volume to refueling volume
F、Test results shall conform to the ratio range of 1 to 1.2
Separation mechanism of dissolution-diffusion of gas through non-porous membrane, i.e., dense membrane (such as polymer membrane). At this time, the process of gas passing through the membrane can be considered to be composed of three steps.(1) adsorption process, that is, the gas on the upstream surface of the film is adsorbed, condensed, dissolved.This process is somewhat selective.(2) diffusion process, that is, the adsorbed gas in the membrane on both sides of the pressure difference, concentration difference, according to the different diffusion coefficient diffusion through the other side of the membrane.(3) desorption process, that has been diffused through the gas in the film downstream surface desorption, stripping process.
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