第5题: [单项选择]A. They make a lot of promises without carrying them out. B. They speak their minds. C. They breathe more fresh air. D. They assume polite manners. 参考答案:B 答案解析:[听力原文] How do you understand "They say what they mean"
第20题: [单项选择]选择复叠式制冷循环的原因是() A. 压差过大 B. 压差过小 C. 制冷剂凝固点偏高 D. 制冷剂凝固点偏低 参考答案:C
第21题: [单项选择]患儿,女,8个月,因腹泻伴呕吐3天入院,大便为黄色稀水样便,每天十余次。查体:体温38.5℃,皮肤弹性差,尿少,前囟凹陷,唇干。大便常规:黄褐色,水样便,WBC0~1个/HP,脂肪球++。最可能的诊断为() A. 婴儿腹泻(食饵性),中度脱水 B. 婴儿腹泻(症状性),中度脱水 C. 肠炎(大肠杆菌引起),重度脱水 D. 肠炎(轮状病毒引起),中度脱水 E. 肠炎(肠道病毒引起),重度脱水 参考答案:D