Mao Zedong is remembered ________ his greatness.[ ]
A. in
B. as
C. for
D. with
答案:C
胃肠道穿孔的X线表现描述不正确的是()
A.膈下游离气体
B.膈下无游离气体基本可排除胃肠道穿孔
C.左侧卧位水平摄片示右侧胸壁出现气体透亮影
D.可见空回肠换位征
E.急性腹膜炎征象
UDP协议是一种不可靠、无连接的传输层协议,其报头长度为 (18) 。
A.32bit
B.64bit
C.128bit
D.512bit