患者,男,42岁。吞咽阻挡感6个月,食管钡餐见图。最可能的诊断是()
A.食管炎
B.食管癌
C.食管Crohn病
D.食管静脉曲张
E.食管贲门失弛缓症
参考答案:D
执行MOVSP,#30H指令后,压栈从片内RAM的()单元开始
A.2FH
B.30H
C.31H
D.#30H
The last of an anchor cable is usually painted().
A.white
B.international orange
C.yellow
D.red