When the crude oil is obtained from the field, it is taken to __________ to be treated. The commonest form of treatment is heating.
A: the corporations
B: the refineries
C: the pipelines
A: the corporations
B: the refineries
C: the pipelines
举一反三
- Crude oil transferred through the pipelines meets ______ of annual need of China.
- of all organic chemical is obtained from crude oil and natural gas. A: 80% B: 99% C: 70% D: 79%
- Crude oil from Xinjiang to Chongqing
- Thousands of products ________ from crude oil are now in daily use.
- For<br/>1080 steel, normalizing is a heat treatment obtained by austenitizing<br/>and ____ cooling. A: air B: furnace C: water D: oil