The client was admitted with severe head injury resulting from a motor vehicle accident. The client is presently unconscious. To facilitate rehabilitation when the client’s condition allows, the nurse should

A. maintain limbs in the position of function.
B. apply restraints to arms and legs to control spasms.
C. exercise just the arms as the legs maintain their tone longer.
D. notify physical therapy as soon as the physician orders passive range of motion.

统计设计的核心问题是（）

A、搜集统计资料方法的设计

B、统计分类和分组的设计

C、统计指标和指标体系的设计

D、统计工作各个环节的具体设计