可用做糖尿病足供血的评定 ()
A.间歇跛行
B.踝-臂血压指数
C.经皮的氧分压
D.足背静脉充盈时间
E.超声多普勒检查
参考答案:A, B, C, D, E
I feel it hard to keep up with my classmates. But whenever I want to ______, my teacher always encourages
me to work harder. [ ]
A.go on
B.give up
C.run away
D.give back
校园网系统集成涉及到osi设计的哪些层()
A.物理层
B.网络层
C.传输层
D.数据链路层