| Large animals living in the desert have
developed a number of adaptations for reducing the effects of extreme heat. One
adaptation is to be light in color, and to reflect rather than absorb the sun’s
rays. Desert animals also depart from other animals’ normal practice of
maintaining a constant body temperature. Instead of trying to keep down the body
temperature deep inside the body, which would involve the loss of water and
energy, large desert animals allow their temperatures to rise to what would
normally be fever height, and temperatures as high as 46 degrees Celsius have
been measured in grant’s gazelles. The over-heated body then cools down during
the cold desert night, and indeed the temperature may fall unusually low by
dawn, as low as 34 degrees Celsius in the camel. This is an advantage since the
heat of the first few hou A. it helps their body temperature to rise at night B. it contributes to a buildup of heat during the first few hours of daylight C. it doesn’t absorb sunlight as much as dark colors D. it helps them to keep cool at night [多选题]客专线道岔翼轨跟端用间隔铁分别与（ ）胶接，胶接层厚度不大于1mm。
A.尖轨 B.护轨 C.长心轨 D.岔跟尖轨 [单选题]高架绝缘斗臂车应存放在干燥通风的车库内，其绝缘部分应有（）措施。
A.防潮 B.防风 C.防沙 D./ E./ F./ G./ H./ [单选题]从中国科学院获悉，近期，中科院天津工业生物技术研究所在淀粉人工合成方面取得重大突破，国际上首次在实验室实现了（ ）到淀粉的从头合成。成果于 9 月 24 日在国际学术期刊《科学》上发表。
A.二氧化碳 B.一氧化碳 C.一氧化硅 D.二氧化硫 [单项选择]治疗菌群失调症常使用
A. 维生素 B. 细菌素 C. 抗菌药物 D. 纤维素 E. 微生态制剂 [单项选择]我国国家环境保护标准分为强制性标准和推荐性标准。下列关于大气的环境质量、监测和污染物标准和技术导则中，属于推荐性标准的是( )。
A. 《环境空气质量标准》 B. 《室内空气质量标准》 C. 《锅炉大气污染物排放标准》 D. 《恶臭污染物排放标准》 [判断题]创伤急救过程中，平地搬运时伤员头部在前，上楼、下楼、下坡时头部在下，搬运中应严密观察伤员，防止伤情突变。
A.正确 B.错误 [单选题]防污涂料工作为减少涂层吸水受潮程度,降低附着力,喷涂工作应选择在空气湿度(____)以下,无风沙、雨雪、霜冻及大雾的天气进行。
A. 0.75 B. 0.8 C. 0.85 D. 0.9 [简答题]乃厚賂發之。
發： [填空题]为了遮挡视线，在厕所的前部宜设深度不小于1.5~2.0的（）。
我来回答: 提交
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