Daily Security Technology Quiz (Single-choice Question) (2016.8.22)
Thread Content
The last edit to this post was made by 68589544 on 2016-8-29 at 00:04. 1. The fire extinguishing medium or extinguisher suitable for fighting fires involving live electricity is ____. A. Water, foam extinguishers B. Dry powder, foam extinguishers C. Dry powder extinguishers, carbon dioxide extinguishers D. Water, dry powder extinguishers. 2. When a pressure vessel’s safety valve is used in parallel with a burst disc device, what are the requirements regarding the set bursting pressure of the burst disc and the operating pressure of the safety valve? A. The calibrated burst pressure of the rupture disc shall not exceed the design pressure of the container, and the opening pressure of the safety valve should be slightly lower than the calibrated burst pressure of the rupture disc. B. The calibrated burst pressure of the rupture disc should be slightly higher than the design pressure of the container, and the opening pressure of the safety valve should be slightly lower than the calibrated burst pressure of the rupture disc. C. The calibrated burst pressure of the rupture disc shall not exceed the design pressure of the container, and the opening pressure of the safety valve should be slightly higher than the calibrated burst pressure of the rupture disc. D. The calibrated burst pressure of the rupture disc should be slightly higher than the operating pressure of the container, and the opening pressure of the safety valve should be slightly higher than the calibrated burst pressure of the rupture disc. C;A
1. The fire extinguishing medium or extinguisher suitable for fighting electrical fires is ____. C. Dry powder fire extinguishers, carbon dioxide fire extinguishers. 2. When a pressure vessel’s safety valve is combined in parallel with a rupture disc device, what are the requirements regarding the set rupture pressure of the rupture disc and the opening pressure of the safety valve? ____. A. The calibrated bursting pressure of the burst disc shall not exceed the design pressure of the container, and the opening pressure of the safety valve should be slightly lower than the calibrated bursting pressure of the burst disc
1. The fire extinguishing medium or extinguisher suitable for fighting electrical fires is __C__. A. Water, foam extinguishers B. Dry powder, foam extinguishers C. Dry powder extinguishers, carbon dioxide extinguishers D. Water, dry powder extinguishers 2. When a pressure vessel’s safety valve is used in parallel with a burst disc device, the requirements regarding the set bursting pressure of the burst disc and the opening pressure of the safety valve are _D___. A. The calibrated bursting pressure of the burst disc shall not exceed the design pressure of the container, and the opening pressure of the safety valve should be slightly lower than the calibrated bursting pressure of the burst disc.
B. The calibrated bursting pressure of the burst disc should be slightly higher than the design pressure of the container, and the opening pressure of the safety valve should be slightly lower than the calibrated bursting pressure of the burst disc.
C. The calibrated bursting pressure of the burst disc shall not exceed the design pressure of the container, and the opening pressure of the safety valve should be slightly higher than the calibrated bursting pressure of the burst disc.
D. The calibrated bursting pressure of the burst disc should be slightly higher than the operating pressure of the container, and the opening pressure of the safety valve should be slightly higher than the calibrated bursting pressure of the burst disc
B. The calibrated bursting pressure of the burst disc should be slightly higher than the design pressure of the container, and the opening pressure of the safety valve should be slightly lower than the calibrated bursting pressure of the burst disc.
C. The calibrated bursting pressure of the burst disc shall not exceed the design pressure of the container, and the opening pressure of the safety valve should be slightly higher than the calibrated bursting pressure of the burst disc.
D. The calibrated bursting pressure of the burst disc should be slightly higher than the operating pressure of the container, and the opening pressure of the safety valve should be slightly higher than the calibrated bursting pressure of the burst disc