Explanation
Non-stock materials are materials that are not kept in stock, but are procured externally as required1. They can be maintained in the material master as service products (product type SERV). You can add non-stock materials to an operation or suboperation as a component. The system creates a purchase requisition and a purchase order in the same way as for non-stock materials that you procure externally1.
Among the given options, the following are possible for non-stock materials in a released maintenance order:
A purchase requisition can be created automatically as soon as the order is saved. This is the default behavior for non-stock materials, unless you change the configuration settings2.
The maintenance order can be set to TECO (technically completed) before the invoice is created. This is possible if you use the compatibility mode for external procurement, which allows you to technically complete the order even if there are open purchase requisitions or purchase orders2.
A goods receipt can be posted after the maintenance order is technically completed. This is possible if you use the enhanced mode for external procurement, which allows you to post goods receipts for non-stock materials after the order is technically completed2.
The following options are not possible for non-stock materials in a released maintenance order:
A purchase order is created automatically as soon as the order is saved. This is not possible, as the purchase order requires manual processing and approval after the purchase requisition is created2.
A purchase requisition will ALWAYS be created as soon as the order is saved. This is not always true, as you can change the configuration settings to create the purchase requisition manually or at a later point in time2.
Therefore, the correct answers are A, B, and C. References: 1: What's New in SAP S/4HANA 2021 - SAP Online Help 2: How to Configure SAP S/4HANA Asset Maintenance Subcontracting - SAP PRESS

Explanation
A maintenance request within the phase-based process differs from a maintenance notification in the standard process in that it contains an additional screening phase where requests can be acceptedor rejected. In the standard process, a maintenance notification is created and processed without any screening. In the phase-based process, a maintenance request is created and submitted for screening. The screening phase allows the supervisor to review the request and decide whether to accept it or reject it. If the request is accepted, it becomes a maintenance notification and moves to the planning phase. If the request is rejected, it is closed and no further action is taken1.
The other options are incorrect because:
A maintenance request does not always use the risk-based assessment for prioritization. It can also use a predefined priority list2.
A maintenance request is not a new business object with no connection to a maintenance notification. It is a maintenance notification that is in the initiation or screening phase3.
It is not mandatory to assign a task list to the maintenance request. A task list can be assigned to the maintenance order in the planning phase4.
References: Explaining the Phase-based Process, New Phase Model for the Maintenance Processes in S/4HANA Cloud, SAP S/4HANA Cloud release of 2011 - Asset Management (Maintenance Management), Introducing Reactive Maintenance (4HH)

The offset within a maintenance strategy is a parameter that allows you to adjust the due dates of the maintenance packages in a maintenance plan. The offset can be used for two purposes:
To determine the first due date of a maintenance package. For example, if you have a quarterly maintenance package with an offset of 2 months, the first due date will be 2 months after the start date of the maintenance plan, and the subsequent due dates will be every 3 months after that.
To shift a maintenance package by a one-time amount. For example, if you have a monthly maintenance package with an offset of 10 days, the first due date will be 10 days after the start date of the maintenance plan, and the subsequent due dates will be every month after that. However, if you want to shift the second due date by 5 days, you can enter an offset of 5 days for the second maintenance package, and the due date will be 5 days later than the normal cycle. The offset will only apply to the second maintenance package, and the subsequent due dates will follow the normal cycle. The offset does not affect the call date for the maintenance order, which is determined by the call horizon and the scheduling period. The offset also does not create a preliminary buffer shifting the reference date of the maintenance order, which is determined by the lead float and the tolerance. References: 1: SAP Help Portal, SAP S/4HANA Asset Management, Learning Journey: SAP S/4HANA Asset Management, Topic: Maintenance Planning, Subtopic: Maintenance Strategy2: SAP Community, Maintenance Strategy-offset and float in days3: SAP Blogs, Highlights for Asset Management in SAP S/4HANA 2021, Topic: Maintenance Planning.

To set up a general maintenance task list for inspection rounds using the overall time confirmation as a simplified way to record measurement documents, you need to do the following steps:
Assign a piece of equipment with an allocated measuring point to a task list operation. This will allow you to inspect the equipment and record the measurement readings for the measuring point during the inspection round. You can assign the equipment either manually or automatically using the object list in the task list header1.
Assign a measuring point as a production resources/tools (PRT) to a task list operation. This will allow you to inspect the measuring point and record the measurement readings for it during the inspection round. You can assign the measuring point either manually or automatically using the PRT category 0010 (Measuring Point) in the task list operation1.
You do not need to assign an inspection lot to the task list header, as this is not required for inspection rounds. Inspection lots are used for quality inspections that are triggered by events such as goods receipt, production order, or sales order2.
You do not need to assign an inspection document as a PRT to the task list operation, as this is not supported for inspection rounds. Inspection documents are used for quality inspections that are based on inspection plans and inspection characteristics2. References: PM - General maintenance task list and Set up your SAP S/4HANA system for EAM Inspection Checklists in SAP Help Portal.