瓦检员考试复习题29（Examiner exam questions 29）.docVIP

瓦检员考试复习题29（Examiner exam questions 29） (pocke) gas inspection in 1. 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 (). Standard answer: X (pocke) 2. 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. () Standard answer: B. (pocke) 3. using optical gas detector to check gas concentration, reading need to be accurate to second decimal places. () Standard answer: B. (pocke) named place 4. full-time headingface gas inspector underground shift should be specified in the operating procedures in the hands of the handover. () Standard answer: B. (pocke) 5. using optical gas detector, if the inspection found that Soda Lime drug particles into powder, powder color is white, it means that the drug failure, must be replaced. () Standard answer: B. (pocke) 6. local fan ventilation before recovery, must check the gas. The local fan can be started only when the gas concentration in the airflow is less than 10 meters within the local fan and its switch. A. 0.5% B. 0.75% C. 1% Standard answer: A (pocke) 7. 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) 8. 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 Standard answer: B (pocke) 9. 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. dri