【单选题】Which statement describes the ROWID data type?()
A.
Binary data up to 4 gigabytes.
B.
Character data up to 4 gigabytes.
C.
Raw binary data of variable length up to 2 gigabytes.
D.
Binary data stored in an external file, up to 4 gigabytes.
E.
A hexadecimal string representing the unique address of a row in its table.
【单选题】In the following options, which one is the data type representing the variable length string?()
【单选题】用地面雷达所拍下的流星离地球的最近距离为220万公里,即T流星被拍下的最近距离。最近的流星照片是G流星,在仅仅离地球1万公里远的距离被拍摄到。下列哪一个可以从上面语句中正确推导出来?( )
C.
许多小行星仅仅可以通过使用地面雷达拍摄下来。
D.
基于地面的雷达不能拍摄距地球220万英里以外的物体。
【多选题】拍摄拍摄距离由远到近分为距离由远到近分为哪几种景别:
【简答题】已知lg2=m,则用m表示lg5的值为______.
【简答题】计算(lg2) 3 +3lg2·lg5+(lg5) 3 = .
【单选题】In the following options, the data type used to represent a fixed-length string is ( ).
【单选题】温州台风多发,房地产开发企业 考虑 在建设期因台风可能导致的建设费用增加属于( ):
【判断题】It is needed to manipulate data independently data type, such as transmitting data to string in TCP/IP protocol, using variant data is the best choice.