In the implementation of the credit system,there are many disturbing factors,including block of traditional concepts,restriction of reality and relatively backward of management.

On difficult factors and essential techniques in English listening course for English majors in the first and second years;

Through the comparison observations under the conditions of opening and drying environments by using the qualitative and quantitative filter paper, we are trying to reveal the environmental and artificial interfering factors to the soluble CO_2 during the observing process in the deep spring water.

It is of great importance to study and identify geochemical anomalies caused by some interfering factors and find out the eliminating methods in developing and applying comprehensive oil and gas geochemical exploration techniques so as to recognize the real anomaly information associated with oil and gas activities.

Comprehensive analysis of instable machining state caused by various disturbing factors was given and pertinent solution was presented.

Through collection of TIG welding arc light spectrum of steel with disturbing factor,this paper studied the effect of disturbing factors such as rusty and various gas flow rate on the arc light spectrum distribution.

The methods include building mathematical and simulation model,building disturbing factor’s model and processing data of simulation result,etc.

Common interference factors in hydrocarbon and mercury measurement and elimination method;

According to the interference factors of the system and its application in reality,the article introduces the measures based on the anti interference software design and the hardware anti interference design.

This paper discusses the main factors influencing the determination results of the total water hardness, analyzes the influence of some interference factors, such as the water example temperature, pH value, reaction time, heavy metals, and oxide matters, etc.