The dew point temperature is（）. ["always higher than the air temperature","always lower than the air temperature","equal to the difference between the wet and dry bulb temperatures","the temperature at which the air is saturated with water vapor"]
产品的设计和开发的输出应包括（）。 ["设计风险分析","产品特殊特性","产品设计防错结果","过程批准的接收准则"]
电动汽车充放电技术主要模式有（）。 ["单向无序电能供给模式","单向有序电能供给模式","双向有序电能转换模式","双向无序电能转换模式"]
内燃机发电技术广泛应用在（）医院、教育以及通信等行业。 ["燃气","电力","供水","制造"]
打印机通常有以下三种（）。 ["针式打印机","彩色打印机","喷墨打印机","激光打印机"]
试比较逻辑移位和算术移位。
