血小板减少的患者,皮肤黏膜常自发性出现出血点和紫癜,主要是由于
A.不易形成止血栓B.血管不易收缩C.不能维持血管内皮的完整性D.血凝块回缩障碍E.血液凝固障碍
参考答案:C
I he a sore back. He looks so well. [ ]
A. don't believe; has
B. believe; has
C. don't believe; doesn't have
D. believe; doesn't have
循环系统日常点检时应检查哪些内容?