物流服务不仅创造商品的形质效用，而且产生空间效用和时间效用。
参考答案：错
A client diagnosed with schizoaffective disorder is suffering from schizophrenia with elements of which of the following disorders
A. Thought disorder.B. Amnestic disorder.C. Personality disorder.D. Mood disorder.
下列哪项指标为诊断ARDS的必要条件（）
A.脉搏血氧饱和度
B.氧合指数
C.动脉血氧分压
D.肺泡-动脉血氧分压差
E.pH值
