瓦检员考试复习题05（Examiner exam questions 05）.docVIP

瓦检员考试复习题05（Examiner exam questions 05） Pocke (pocke) 1. using optical gas detector to check gas concentration, reading need to be accurate to second decimal places. (V) (pocke) 2. high gas coal mine working face gas concentration should check the number of each class of not less than 3 times. (V) (pocke) 3. three inspection system refers to the working face gas concentration in air flow check on work place before charging, charging, blasting. (x) (pocke) gas inspection in 4. working face of blasting site, should be carried out on the site and the inward airflow within the local gas accumulation at the range of 20 meters (x). (pocke) 5. local gas accumulation refers to the working face and other roadway, volume greater than 0.5 cubic meters of gas concentration accumulation within the space of up to 2% of the phenomenon. (V) (pocke) 6. in the inner product local gas accumulation or temporary stop wind poly gas, the gas concentration and the concentration of carbon dioxide () the case, security measures must be taken to control airflow. The gas emission, no cancellation. A. no more than 2.5% B. no more than 3% C. no more than 5% Standard answer: B (pocke) 7. two heading face through, only in the two working face and back to the gas concentration in air flow (), the tunneling working surface can be blasting. A. are below 0.5% and B. are below 1% C. driving face is less than 1%, stopping face is below 1.5%, and D. is below 1.5% Standard answer: B (pocke) 8. volume determination, in the same section of the wind frequency should not be less than (). Each time the results error is less than 5% and (). A. 2 times, take the average value of B. 2 times, take its maximum value C. 3 times, take the average value of D. 3 times, take its maximum value Standard answer: C (pocke) 9. inspection work in high gas coal mine gas outburst mine or mining face, must wear () and can master the good method of using self rescuer. A. filter self rescuer B. isolated self rescuer C. any kind can