Controlling the orientation of testing value of safety margine can reduce the risk of engineering construction quality.

In China, a big argument has lasted for five years in the field of civil engineering, which is that according to the economic development in the past twenty years, is it necessary to increase the safety margin for structural design to a great extent? Some points are different.

But from the view of safety, the application of high-strength materials can great increase safety margin of a structure.

Based on choosing safety factor that has prodigious influence on effect and expense of prevention and cure in the landslide,whether safety repertory factor of landslide defined according to safety factor can weigh landslide safety repertory value behind being fathered or not is worth pondering over.

The Nuclear Crisis of Iran and China's Oil Security;

Study on Petroleum Reserve System under China;

Research of Manners and Benefit of China s Petroleum Reserve;

Study on the Linkage between Petroleum Reserve and Futures Market;

Oil Reserve and National Military Security;

Finally,thepaper proposesthat Chinashould set up its own oil futuremarkets and quicken the steps of setting China's oil reserve system and diversify its energy structures in order to meet the challenge of the up-rising of the global oil prices.

Yunnan build the state oil reserve bases is the necessary choice for the state petroleum safement.