溃疡型肠结核的X线表现有()
A.肠管边缘呈锯齿状
B.斑点状小龛影
C.激惹征
D.粘膜紊乱呈小息肉状充盈缺损
E.可出现肠梗阻表现
参考答案:A, B, C, E
All things ________, nothing remains of its former glory.
A.have passed
B.having passed
C.had passed
D.passing
如图,物体A重20N,滑轮重1N,绳重不计,弹簧测力计示数为25N,则物体B重____N