按支出法核算，生产总值等于下列哪几项之和。（）
A.中间投入
B.（总）投资
C.进出口净额
D.（总）消费
参考答案：B, C, D
热量从低温热源排向（）热源的循环称为制冷循环。
A、低温
B、高温
C、恒温
D、室内
A client is receiving chemotherapy for cancer. The nurse reviews his laboratory report and notes that he has thrombocytopenia. To which nursing diagnosis should the nurse give the highest priority（）
A. Activity intolerance.
B. Impaired tissue integrity.
C. Impaired oral mucous membranes.
D. Ineffective tissue perfusion (cerebral, cardiopulmonary, GI).
