Water and power safety officer b. Certificate test questions (with answers and analysis), focus on water engineering safety management, on-site protection, high-risk engineering control, emergency disposal and regulatory standards, directly to the core points:
1. Temporary power supply at the water and electricity construction site shall conform to( )
Technical instructions for temporary electricity safety at construction sites
B. Safety management protocol for the construction of hydroelectric projects
C. Design specifications for low-voltage distribution
D. Guidelines for the construction and acceptance of ground-based installations for electrical installations
Answer: a
Analysis: the core standard for temporary electricity use at the construction site is the technical instructions for temporary electricity safety at the construction site (jgj46), while the remaining specifications are only supplementary references and do not address specific requirements for temporary electricity use。
2. The frequency of monitoring of deep-based pit support structures in hydropower projects should be determined according to ( )
A. Ground pit depth
B. Geological conditions
C. Construction progress
D. The above
Answer: d
Analysis: the frequency of monitoring of deep-based pits needs to be combined with such factors as the depth of the base pit, geological conditions (e. G., soft soil, sand), construction progress (opening, support phase) to ensure timely detection of structural deformation risks。
3. Special construction programmes and expert validations are required for hydro-hydroelectric scaffolding above () metres
A. 21
B. 36
C. 48
D. 50
Answer: d
Analysis: the scaffolding, under the terms of the management of high-risk works, consists of work at a height of 50 metres, which requires the preparation of specific programmes and the organization of expert validations, up to 24 metres only。
4. Fire escape routes at the hydroelectric construction site should not be less than () m
A. 3
B. 4
C. 5
D. 6
Answer: b
Analysis: the width of the fire escape route is required to meet the requirements for the passage of fire-fighting vehicles, and the specification should not be less than 4 metres, while ensuring access and accessibility。
5. The length of poles in the concrete template support system should not be greater than ( ) m in the hydroelectric project
A. 1. 0
B. 1. 2
C. 1. 5
D. 2. 0
Answer: b
Parsing: the distance between the poles of the template support system is to be contained within 1. 2 metres to ensure the strength and stability of the support and to prevent the collapse of the concrete when it is sown, depending on the load, but not beyond the upper limit。
6. During the construction of the hydroelectric project, the safe distance between the oxygen cylinder and the acetylene bottle shall not be less than () rice and from the open fire shall not be less than () rice
A. 3, 10
B. 5, 10
C. 5, 8
D. 8, 15
Answer: b
(b) parsing: when flammable and explosive gas is stored, oxygen cylinders are 5 m apart from acetylene bottles, and the two are 10 m apart from the open fire, avoiding the explosion of the open fire after the leaking gas is mixed。
