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This post was last edited by Wang Tianze on 2015-11-23 at 18:51. 38. Protective grounding refers to the practice of connecting the metal casing of electrical equipment to (B) in a three-phase four-wire power supply system where the power source’s neutral point is grounded. A. Grounding electrode B. Power neutral wire C. Power live wire D. Insulator 39. When installing a pressure gauge, the pressure measurement point should be selected at the section of the pipe where the medium to be measured (A) is present. A. Laminar flow B. Pipe bend C. Pipe branch D. Pipe dead corner Closed!
38. Protective grounding refers to connecting the metal casing of electrical equipment to (B) in a three-phase four-wire power supply system where the power source’s neutral point is grounded. A. Grounding electrode B. Power neutral wire C. Power live wire D. Insulator 39. When installing a pressure gauge, the pressure measurement point should be selected at the section of the pipe where the medium to be measured (A) is present. A. Laminar flow B. Pipe bend C. Pipe branch D. Pipe dead corner
38. Protective grounding refers to connecting the metal casing of electrical equipment to (A) in a three-phase four-wire power supply system where the power source’s neutral point is grounded. A. Grounding electrode B. Power neutral wire C. Power live wire D. Insulator 39. When installing a pressure gauge, the pressure measurement point should be selected at the section of the pipe where the medium to be measured (A) is present. A. Laminar flow B. Pipe bend C. Pipe branch D. Pipe dead corner
38. Protective grounding refers to connecting the metal casing of electrical equipment to (B) in a three-phase four-wire power supply system where the power source’s neutral point is grounded. A. Grounding electrode B. Power neutral wire C. Power live wire D. Insulator 39. When installing a pressure gauge, the pressure measurement point should be selected at the section of the pipe where the medium to be measured (A) is present. A. Laminar flow B. Pipe bend C. Pipe branch D. Pipe dead corner
38. Protective zero connection refers to connecting the metal casing of electrical equipment to (A) in a three-phase four-wire power supply system where the power source neutral point is grounded. A. Grounding electrode B. Power neutral wire C. Power live wire D. Insulator 39. When installing a pressure gauge, the pressure measurement point should be selected at the section of the pipe where the medium to be measured (A) is present. A. Laminar flow B. Pipe bend C. Pipe branch D. Pipe dead corner
38. Protective grounding refers to connecting the metal casing of electrical equipment to (B) in a three-phase four-wire power supply system where the power source’s neutral point is grounded. A. Grounding electrode B. Power neutral wire C. Power live wire D. Insulator 39. When installing a pressure gauge, the pressure measurement point should be selected at the section of the pipe where the medium to be measured (A) is present. A. Laminar flow B. Pipe bend C. Pipe branch D. Pipe dead corner
The correct answer to this question is: B, A
38. Protective grounding refers to connecting the metal casing of electrical equipment to (B) in a three-phase four-wire power supply system where the power source’s neutral point is grounded. A. Grounding electrode B. Power neutral wire C. Power live wire D. Insulator 39. When installing a pressure gauge, the pressure measurement point should be selected at the section of the pipe where the medium to be measured (A) is present. A. Laminar flow B. Pipe bend C. Pipe branch D. Pipe dead corner
38 B. Power supply neutral wire 39 A. Straight-flow
38. Protective grounding refers to connecting the metal casing of electrical equipment to (B) in a three-phase four-wire power supply system where the power source’s neutral point is grounded. A. Grounding electrode B. Power neutral wire C. Power live wire D. Insulator 39. When installing a pressure gauge, the pressure measurement point should be selected at the section of the pipe where the medium to be measured (A) is present. A. Laminar flow B. Pipe bend C. Pipe branch D. Pipe dead corner