【判断题】中国人最早使用“政策”一词,始于梁启超。( )
【判断题】潮坪既可以形成碎屑沉积,又可以形成碳酸盐沉积。
【简答题】中国有自己的和尚和一套拜佛的礼节,都始于_____。
【单选题】A utility program that makes copies of files to be used in case the originals are lost or damaged:
【单选题】A utility program that copies all files in the libraries, contacts, favorites, and on the desktop:
【单选题】Many scientists remain ______ about the value of this research program.
【单选题】The _____ utility program eliminates unneeded files on your hard disk.