Pipelines are not （）

Crude oil transferred through the pipelines meets ______ of annual need of China.

The loss of （） from an air compressor could lead to an overheated air discharge and possibly an explosion in the pipelines leading to the air reservoir.

Why did some oil companies temporarily close some of their pipelines? A: Because there were no enough staff working. B: Because much of the equipment had been destroyed. C: Because those not in key positions could therefore leave the area. D: Because many pipelines had caught fire, thus threatening people there.

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

Which of the following suits for energy-saving A: Making thermal insulation for cooling and heating pipelines B: Producing metal materials with mineral resource instead of metal scrapes C: Long distance transmission of electric power D: Using air conditioning system as much as possible

What does superscalar technique mean? A: The execution unit of instructions in a microprocessor is independent and works in parallel B: The microprocessor has multiple pipelines C: The integrated microprocessor chip has multiple logical CPUs inside D: A computer system has multiple independent microprocessors