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  2. File:US Citizenship test questions - English.pdf - Wikipedia

    en.wikipedia.org/wiki/File:US_Citizenship_test...

    English: This is the official list of questions (and expected answers) that can be asked on the civics portion of the American naturalization test, revised in January of 2019. While most of these questions are supplied with answers, the ones that ask about specific members of the American government are not.

  3. Maintenance testing - Wikipedia

    en.wikipedia.org/wiki/Maintenance_testing

    Maintenance testing is a test that is performed to either identify equipment problems, diagnose equipment problems, or confirm that repair measures have been effective. It can be performed at either the system level (e.g., the HVAC system), the equipment level (e.g., the blower in an HVAC line), or the component level (e.g., a control chip in the control box for the blower in the HVAC line).

  4. Level of Repair Analysis - Wikipedia

    en.wikipedia.org/wiki/Level_of_Repair_Analysis

    Test equipment is more common at this level of repair, and is used to automate many test procedures. Spare parts maintained at this level of repair are known as bench stock . Intermediate-level maintenance deployment can vary widely, and is highly dependent on desired operating conditions.

  5. Maintenance - Wikipedia

    en.wikipedia.org/wiki/Maintenance

    Preventive maintenance or preventative [16] maintenance (PM) has the following meanings: The care and servicing by personnel for the purpose of maintaining equipment in satisfactory operating condition by providing for systematic inspection, detection , and correction of incipient failures either before they occur or before they develop into ...

  6. Aircraft maintenance checks - Wikipedia

    en.wikipedia.org/wiki/Aircraft_maintenance_checks

    [3] [4] The MRBR is based on the analysis performed using ATA "MSG-3 Operator/Manufacturer Scheduled Maintenance Development" document (MSG-3 is for Maintenance Steering Group – 3rd Task Force). [4] The MRBR is an approved set of aircraft initial maintenance requirements as prescribed by the Appendix H to para. 25.1529 of 14 CFR part 25 ...

  7. Order-maintenance problem - Wikipedia

    en.wikipedia.org/wiki/Order-maintenance_problem

    A problem related to the order-maintenance problem is the list-labeling problem in which instead of the order(X, Y) operation the solution must maintain an assignment of labels from a universe of integers {,, …,} to the elements of the set such that X precedes Y in the total order if and only if X is assigned a lesser label than Y.