天然气的露点是指在一定压力下，天然气含水量达到饱和时的（）。

A.体积

B.温度

C.水量

D.湿度

A.露点

B.重烃

C.轻烃

D.含水量

此题为判断题(对，错)。

A.凝固点

B.冷凝点

C.冰点

D.露点

A、硅胶吸附能力很好，但遇液态水极易破碎，处理量大时又会很快失效，所以硅胶适用于处理量小而含水量不大的情况；Silica gel has a good adsorption capacity, but it is easy to be broken in the case of liquid water, and will fail quickly when the amount of treatment is large, so silica gel is suitable for the case of small amount of treatment and little water content;

B、活性氧化铝是较好的干燥剂，但活性丧失较快，特别在酸性气体较多时容易变质，需要经常更换吸附剂，成本也就增高；Activated alumina is a good desiccant, but the activity is lost quickly, especially in the acidic gas more easily deteriorated, often need to replace the adsorbent, the cost will increase;

C、分子筛是高效脱水剂，特别是抗酸性分子筛，能适应含酸性气体较多的天然气的脱水。分子筛特别适用于处理量大，而且要求露点降低幅度大的情况，如天然气液化前的深度脱水，在处理量小、露点降低要求不多的情况下就失去了它的优越性。Molecular sieve is an efficient dehydrating agent, especially acid resistant molecular sieve, which can adapt to the dehydration of natural gas with more acidic gas. Molecular sieve is especially suitable for the case of large treatment capacity and large dewpoint reduction, such as deep dehydration before natural gas liquefaction, but it loses its superiority when the treatment capacity is small and the dewpoint reduction requirement is few.

D、以上都不对

此题为判断题(对，错)。

A. 密度

B. 临界温度

C. 粘度

D. 温度