关于物流中心与配送中心的区别,下列正确的是() 物流中心功能较为全面。 配送中心规模一般较大。 配送中心服务于少量供应商。 物流中心通常提供第三方物流服务。
A database user SMITH tries to query the V$SESSION view and fails to access it as follows: SQL> connect smith/smith Connected. SQL> SELECT * FROM v$session; SELECT * FROM v$session * ERROR at line 1: ORA-00942: table or view does not exist Which are the two possible solutions to enable SMITH to query the data in V$SESSION() granting SELECT privilege to SMITH on V$SESSION。 granting SELECT privilege to SMITH on V_$SESSION。 asking the user SMITH to run the catalog.sql script。 granting SELECT privilege to SMITH on V$FIXED_TABLES。 setting the O7_DICTIONARY_ACCESSIBILITY parameter to TRUE。 creating a view based on V$SESSION and granting SELECT privilege to SMITH on the view that was created。
使用游标卡尺测量工件时,测量力()通过测量者的感觉来控制。 能。 不能。 有时能。 仅。
立体划线是在工件上几个互成()的表面上划线。
Which two statements are true about simple views?() Views can be created as read only.。 Views are data segments like tables.。 Views can be created on the basis of more than one table.。 Data manipulation language (DML) operations cannot be performed on views.。
有规则游戏的几个基本因素中,核心因素是()