Final answer:
True, complete linen changes are indeed required for both closed beds and surgical beds in nursing centers to maintain cleanliness and a sterile environment for patients.
Step-by-step explanation:
The statement is true: in nursing centers, complete linen changes are required for closed beds and surgical beds. A closed bed is a bed that is made following the discharge of a patient and is prepared for a new patient. It includes clean linens, with the top bedspread neatly arranged.
Surgical beds, also known as recovery beds, are prepared for patients who will be returning to bed directly from surgery. These beds also require complete linen changes to ensure a sterile environment for the postoperative patient.