土钉墙施工完成后，在其外挂混凝土板底部应考虑设置条形混凝土基础，其埋置深度要求在地面以下至少（）cm。 ["30","40","50","60"]
给下列汉字注音并组词。奢
操作高压电器设备必须遵守的规定¬有哪些？（） ["操作人员必须戴绝缘手套","操作人员可以不戴绝缘用具","只有机电工可以操作","变电所内应配备绝缘用具"]
明槽水流的急流和缓流是用Fr判别的，当Fr＞1为急流。
Given that the current directory is empty， and that the user has read and write permissions， and thefollowing： Which statement is true？（） ["Compilation fails.","The file system has a new empty directory named dir.","The file system has a new empty directory named newDir.","The file system has a directory named dir， containing a file f1.txt.","The file system has a directory named newDir， containing a file f1.txt."]
古德诺是如何看待 “政治与行政”二分法的？
