[填空题] 多级空气压缩机采用级间冷却可使前级排气的体积减小，节省下一级压缩时的（）。

所谓存折针式打印机也叫（）打印机。 ["票款码式","票据码式","票款针式","票据针式"] Which of the following methods is used to prevent throttling of compressed air through the diesel engine air starting valves?（） ["Holding the valve open for a long period","Increasing the starting air pressure used","Opening the stating air valve quickly","Reducing the starting air valve size"] CDMA接通率为什么高？ 现行有效的行政法规有以下几种类型（） 字库还没有正确载入打印机会出现（）的现象。 ["打印乱码","打印编码","打印错码","打印人码"] 多级空气压缩机采用级间冷却可使前级排气的体积减小，节省下一级压缩时的（）。