系统线路接头应插件化,线端必须作()。
A、编号标记
B、识别标记
C、永久性标记
D、颜色标记
参考答案:C
I knew that _____ would ever discourage him, he would never give up wanting to be a director. [ ]
A. something
B. anything
C. everything
D. nothing
男性,35岁,进餐后右上腹痛,呈剧烈绞痛,查体见表情痛苦、不安。该患者最可能的诊断是()
A.急性胰腺炎
B.急性胆囊炎
C.急性心肌梗死
D.急性阑尾炎
E.急性胃炎