第5题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. This conversation was at the airport. B. They were eating lunch and talking in a restaurant. C. This took place in a college information office. D. They were at the dean’s home. 参考答案:C 答案解析:[听力原文]
M: Do you think the travel agency will be open Saturday afternoon I want to get some inform
第9题: [单项选择]关于闭合性肾损伤,下列应考虑手术治疗的是() A. 肾实质裂伤 B. 保守治疗观察过程中出现血尿 C. 血尿加重伴血压下降 D. 血尿仍存在,但血压在上升 E. 伤后出现腰部或腹部包块 参考答案:C 答案解析:闭合性肾损伤的手术适应证为出现无法纠正的失血性休克、腰部或腹部肿块增大、高热或腰痛加重、可疑合并其他腹腔脏器损伤,以及血尿呈进行性加重,因此应选C。
第26题: [单项选择]焊前预热的目的在于()。 A. 增加焊缝金属与母材间的温度差 B. 控制焊缝组织转变,形成马氏体 C. 防止焊接过程中产生裂纹 D. 均衡焊接接头初始温度 参考答案:C 答案解析:预热的作用是减少焊缝金属与母材间的温度差,答案A显然是错误的;控制焊缝组织转变,避免形成脆性马氏体,答案B不正确;预热的目的是减少焊缝金属与母材间的温差,提高焊接接头初始温度,故答案D也不正确,只有答