下列哪种疾病“充盈缺损”表现不明显
A.增生型胃癌B.溃疡型食管癌C.胃黏膜下平滑肌瘤D.增殖型肠结核E.结肠息肉
参考答案:B
解析:ACDE均有充盈缺损样改变,B有龛影表现。
Sales slow down after the Spring Festival, but we are expecting things to _____ again this
coming May Day.
A.take over
B.pick up
C.come over
D.go up
制动软管的作用是连接相邻两车辆的(),在列车通过曲线或车辆相互伸缩时,不妨碍压力空气的畅通。