适用于血栓与止血检查的标本是（）。
A.全血
B.血清
C.血浆
D.血细胞
E.血小板
参考答案：C
-Do you know him well ?
- Sure. We ______ friends since ten years ago.[ ]
A. were
B. have been
C. have become
D. have made
下列哪种疾病或情况可出现潮式呼吸
A．糖尿病酮症酸中毒
B．青年人熟睡中
C．神经衰弱
D．胸膜炎
E．脑膜炎
