计算机网络是由哪两部分组成（）
A.通信子网
B.计算机
C.资源子网
D.数据传输介质
参考答案：A, C
Dad is used to smoking and drinking. There is no chance________I am able to talk him into ________.
A．whether；giving it up
B．of whether；giving them up
C．which；stopped it
D．that; getting rid of them
肩关节后侧的穿刺体位是（）
A.上臂轻度外展、外诊
B.上臂轻度外展、内诊
C.上臂内收、外诊
D.上臂内收、内旋
E.上臂后伸
