If air at 95℃ dry bulb temperature and 50% relative humidity is conditioned to 75℃ dry bulb temperature and 50% relative humidity, it is an example of （）. ["cooling only","cooling and humidifying","cooling and dehumidifying","adiabatic cooling"]
乳糖操纵子模型中，乳糖与结合在（）上的阻遏蛋白结合，使其改变构象，失去活性。 ["操纵基因","结构基因","启动基因","操纵子"]
下面是市场发展战略的内容的有（）。 ["维持现状战略","退出战略","营销战略","市场开发"]
mRNA上密码子UGG相配的tRNA反密码子是（） ["UGG","ACC","GGU","CCA"]
油水在油层中的运动是毛管力、（）共同作用的结果。 ["驱动力、重力和粘滞力","驱动力和粘滞力","重力和粘滞力","驱动力和重力"]
光缆引入终端方式及安装位置应符合什么规定？
