Regarding the requirements of non-destructive testing personnel, the following statement is wrong ( ).
a. Working-level personnel can issue test reports.
B. Level personnel can evaluate the test results.
C. Level personnel can review the test report.
d. Personnel can carry out the preparation of non-destructive testing processes.
Answer: A analysis: Among the special equipment operators, non-destructive testing personnel include: Working-level personnel can carry out non-destructive testing operations and record and sort out testing data; The personnel can prepare general non-destructive testing procedures, and independently carry out the detection report according to the testing process; Personnel according to the standard preparation of non-destructive testing process, review or issue a test report, explain the test results, arbitration personnel of the test conclusion of the certificate holder can only engage in its qualification level, method corresponding to the non-destructive testing work.
Multiple choice question] When the diameter of the indoor fire hydrant water supply pipe of the fire hydrant fire extinguishing system is greater than ( ), the flange or clamp connection is used.
a、22mm
b、25mm
c、50mm
d、100mm
Answer: D analysis: If the pipe diameter of the indoor fire hydrant water supply pipe of the fire hydrant fire extinguishing system is 100mm, the threaded connection is adopted, and the flange or clamp connection is used for more than 100mm.
Multiple choice question] The current of each single-phase branch circuit in the lighting distribution box should not exceed 16A, and the number of lamps should not exceed ( ).
a、60b、50
c、35d、25
Answer: D analysis: the current of each illumination single-phase branch circuit should not exceed 16A, and the number of connected light sources should not exceed 25; When connecting building combination lamps, the loop current should not exceed 25A, and the number of light sources should not exceed 60; The current of the single-phase branch circuit connected to the high-intensity discharge lamp should not exceed 30A.
Multiple choice question] In the quality acceptance of the branch project, the quality of the project perception should be assessed by the acceptance personnel through ( ).
a. Engineering analogy.
b. Data analysis.
c. Data statistics.
d. On-site inspection.
Answer: D Analysis: In the quality acceptance of the branch project, the perceived quality acceptance is difficult to quantify, and can only be carried out by observation, touch or simple measurement, and judged by the subjective impression of the individual, and the inspection results do not have to give the conclusion of "qualified" or "unqualified", but the quality evaluation is comprehensively given. For "poor" checkpoints, measures such as rework should be passed.
Multiple choice question] In the mountainous area, the lifting equipment of the ropeway is mostly used ( ).
a. Slip steer hoisting method.
b. Ultra-high-altitude oblique cable hoisting method.
c. Universal rod hoisting method.
d. Rotary hoisting method.
Answer: B analysis: The hoisting method of ultra-high-altitude inclined cable hoisting equipment is suitable for hoisting small and medium-sized equipment in ultra-high-altitude and uphill ropeways in mountainous areas. Such as Shanghai Oriental Pearl high-altitude lifting equipment.
Multiple choice] dn represents ( ) of welded steel pipes, valves and pipe fittings
a. Inner diameter. b. Outer diameter.
c. Nominal diameter.
d. Thickness of pipe wall.
Answer: C Analysis: DN represents the nominal diameter of welded steel pipes, valves and pipe fittings.
Multiple choice question] What measures have been taken to prevent false alarms ( ).
a. There is a balance pipeline in the alarm valve.
b. Set a time delay on the pipeline from the alarm valve to the alarm bell.
c. There is no balance pipeline in the alarm valve.
d. Set a protector on the pipeline from the alarm valve to the alarm bell.
e. Main road pipelines.
Answer: BC analysis: In order to prevent the misoperation alarm due to water pressure fluctuations, two main measures are taken, one is that there is no balance pipeline in the alarm valve, and the balance is false alarm due to excessive differential pressure between the upper and lower cavities caused by instantaneous fluctuations; The second is to set a delay device on the pipeline from the alarm valve to the alarm bell.
True or False] The failure of the slender pressure rod is not the lack of strength, but whether it can maintain the balanced form of the original straight line.
a. Correct. b. Error.
Answer: A Analysis: The failure of the slender pressure rod is not the lack of strength, but whether it can maintain the balanced form of the original straight line. This failure phenomenon is called loss of stability of the pressure bar, or instability for short.
True or False] The influence of pressure on dynamic viscosity is very large and cannot be ignored.
a. Correct. b. Error.
Answer: B Analysis: In general, as long as the pressure is not particularly high, the influence of pressure on dynamic viscosity is very small.
True/False] The subcontractor shall be responsible to the construction unit for the quality of its subcontracted project in accordance with the provisions of the subcontract
a. Correct. b. Error.
Answer: B Analysis: The subcontractor is responsible to the general contractor for the subcontracted project in accordance with the subcontract. It should be noted here that subcontracting is a contract signed with the general contractor, and is only responsible for the general contractor. Moreover, in normal construction, it is not allowed to have direct contacts with the supervision party or construction unit.