胰腺癌最常见的首发症状是
A.上腹痛及上腹饱胀不适
B.黄疸
C.食欲减退
D.消化不良
E.乏力消瘦
参考答案:A
Liu Xiang is an Olympic winner in the _____ hurdles (跨栏). We're proud of him. [ ]
A. 110-meters
B. 110-meter
C. 110 meter
终端中“打开CRC4校验开关”的作用是()
A.检测终端版本
B.检测终端内存
C.检测E1/4E1网络线路
D.检查麦克风输入