Aiming at the weakpoint of current lighting technology,a new type controlled switch of lighting—secondary power switch was designed.

Though example of second-pumping concrete after high-dropping in tunnel, this article introduced production, quality control and pouring of high-dropping concrete.

The paper analyzes the refined oil distribution in a branch of China Petro-chemical Group,discusses the features of oil second distribution demand,establishes a re-fined oil demand forecast model which is used to forecast the oil and vehicle demand of the next day.