中石北京 安全检测与监测 第一阶段在线作业（Zhongshi Beijing security detection and monitoring the first stage of online operation）.docVIP

中石北京 安全检测与监测 第一阶段在线作业（Zhongshi Beijing security detection and monitoring the first stage of online operation） As a industry Problem 1 is not part of the photoelectric element in the following components Your answer: A Title score: 0.5 Score: 0.5 Remarks: optical fiber is the optical transmission tool The following method cannot change the capacitance of inductive sensor Your answer: B Title score: 0.5 Score: 0.5 Note: inductance sensor principle is to use inductance element to convert the change of the measured physical quantity into a sense of inductance or mutual inductance, and then the measurement circuit is converted to voltage (or current change). The piezoelectric sensor is currently used for measurement Your answer: A Title score: 0.5 Score: 0.5 Remark: piezoelectric sensor sensitive element belongs to the force sensitive element, used for force, pressure, acceleration, mechanical shock and vibration, etc Problem 4 hall elements are motivated by constant current source to be used Your answer: C Title score: 0.5 Score: 0.5 Remarks: constant current source excitation reduces unequal potential Problem 5 photosensitive diodes belong to Your answer: C Title score: 0.5 Score: 0.5 Remarks: photoelectric diode, photosensitive triode and photocell are used to make use of the photoelectric volt effect Problem 6. Photoelectric vacuum tube belongs to Your answer: A Title score: 0.5 Score: 0.5 Remarks: devices made of external photoelectric effects have vacuum photoelectric tubes, gas photoelectric tubes and photomultiplier tubes Problem 7: temperature rise, light sensitive resistance, photosensitive diode, light sensitive triode current Your answer: A Title score: 0.5 Score: 0.5 Remarks: temperature rises, dark current rises, bright current drops, is the signal to noise ratio decreases The number 8 magnetoresistance reflects the maximum signal strength obtained by magnetic resistance sensor. The magnetic resistivity of anisotropic magnetoresistance sensor (AMR) is gene