第12题: [单项选择]18岁,男性。胰岛素依赖型糖尿病患者,2天前中断胰岛素后出现昏迷,血糖420mg/dl(23mmol/L),经抢救并静脉滴注碳酸氢钠后血糖下降,神志好转,酸中毒减轻,但不久又进入昏迷,其最可能的原因是() A. 并发脑水肿 B. 并发低血糖 C. 并发脑血管意外 D. 并发乳酸酸中毒 E. 并发肾衰竭 参考答案:A 答案解析:补充碳酸氢钠过多过快,而红细胞2,3-DPG升高和GHb含量下降则较慢,因而加重组织缺氧,并发脑水肿
第13题: [单项选择]某营业性饭店厨房排油烟系统风量20000m3/h.油烟浓度13mg/m3,选择油烟净化设备的去除效率不应小于()。 A. 88% B. 90% C. 85% D. 80% 参考答案:C 答案解析:见《饮食业油烟排放标准》GB18483-2001(简称《油烟排放标准》)规定,最高允许排f放浓度为2.Omg/m3,则:η=(13-2)/13≈0.85
第37题: [单项选择]How does Elizabeth’s company differ from Steven’s A. It is likely to become larger than Steven’s in the future. B. It has started to operate in more then one country. C. It has started to operate in more than one country. 参考答案:B