诊断内分泌疾病,下列哪项较易于确定
A.病理诊断
B.功能状态
C.病因诊断
D.细胞学
E.物理诊断发现
参考答案:B
—Can I get you a cup of black coffee?
—______.
A.It’s nice of you
B.With pleasure
C.You can, please
D.Thank you for the coffee
磨损可分为哪几个阶段,各有何特征?试用图表示?