题目内容
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A、含量居第二。无色气体Colorless gas.
B、比空气稍重，lNm3乙烷重1.271kg。Slightly heavier than air, lNm3 ethane weighs 1.271kg.
C、它的热值在60345～65946kJ/m3。Its calorific value is 60345 ~ 65946kJ/m3.
D、在20℃条件下，加压至3.8MPa以上时，可液化成为相对密度0.446的液体。Under the condition of 20℃, the liquid can be liquefied to a relative density of 0.446 when pressurized to more than 3.8MPa.
E、天然气中的含量一般在0.05~25%之间。Natural gas typically contains between 0.05 and 25 percent.
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更多“乙烷C2H6:（）”相关的问题
A、主要成分Main components。无色，稍有蒜味。Colorless, slightly garlicky
B、比空气轻，在标准压力(101.325kPa)和15℃下，1Nm3甲烷重0.6785kg。Lighter than air, 1Nm3 methane weighs 0.6785kg at standard pressure (101.325kPa) and 15℃
C、具有高的热稳定性和很高的热值(33904～37668kJ/m3)。It has high thermal stability and high calorific value (33904 ~ 37668kJ/m3).
D、以上都不对
A、相对密度比空气大1倍，lNm3正丁烷重2.458kg。The relative density is 1 times that of air, and lNm3 n-butane weighs 2.458kg
B、经常以液体形式从天然气中提取出来，通常被当作动力汽油的掺合剂使用。It is often extracted in liquid form from natural gas and is often used as an admixture for power gasoline
C、在常温常压下, C1～C4为气体, C5+为液体At normal temperature and pressure, C1 ~ C4 is a gas and C5+ is a liquid
D、以上都不对
A、是硫化物中的主要组成部分，极臭且有毒的可燃气体。Is the main component of sulfide, extremely smelly and toxic flammable gas.
B、硫化氢是天然气中的一种酸气。Hydrogen sulfide is an acid gas in natural gas.
C、在硫化氢含量为0.06％的环境中，如果人停留2min以上时，将可能导致死亡。因此，须从原料气脱除。At 0.06 percent hydrogen sulfide, people can die if they stay for more than 2 minutes. Therefore, the raw gas must be removed.
D、以上都不是
A、无色气体Colorless gas
B、比空气重，lNm3丙烷重1.966kg。Heavier than air, lNm3 propane weighs 1.966kg.
C、20℃及0.85MPa以上时呈液态。Liquid state at 20℃ and above 0.85MPa.
D、丙烷的热值介于86403～93889kJ/m3。The caloric value of propane is between 86,403 and 93889kJ/m3.
E、天然气中含量一般在0.005%~4%之间。Natural gas generally contains between 0.005% and 4%.
A、干气
B、湿气
C、贫气
D、富气
A、是一种酸气，无色，具有微弱的气味。It is also an acid gas, colorless, with a faint odor.
B、通常只要对热值无太大影响时可不脱除CO2。Usually CO2 can not be removed as long as there is no significant effect on calorific value.
C、CO2与水在一定条件下形成水合物，并对井下以及集输设备产生腐蚀作用。CO2 and water form hydrate under certain conditions, and produce corrosion effect on underground and gathering and transportation equipment.
D、CO2用于注气驱油时可以提高采收率。CO2 can improve recovery when used for gas flooding.
A、容积分数
B、摩尔分数
C、重量分数
D、质量分数
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