Given a method that must ensure that its parameter is not null： What， inserted at line 12， is the appropriate way to handle a null value？（） assert value == null；。 assert value != null， "value is null"；。 if （value == null） { throw new AssertionException（"value is null"）； }。 if （value == null） { throw new IllegalArgumentException（"value is null"）； }。
一般认为，影响大学生品德形成发展的内在因素包括（） 自我意识提高。 人生价值追求。 个体身心特征。 同伴关系。
电泵组成中的变压器属于哪一部分。（） 井上。 井下。 压力讯号传输系统。
Your database in running in the ARCHIVELOG mode. You issue the following command to back up datafile 2 in your database. RMAN> COPY DATAFILE 2 TO ’D：\ORACLE\ORA90\MYNEWDB\DA2.DBF’； Which two statements are true regarding the backup created using this command？（） The copy of the datafile created is stored in the RMAN repository.。 The copy of the datafile created can be viewed using the LIST BACKUP command.。 The copy of the datafile created using this COPY command can be placed only on the disk.。 The copy of the datafile created is similar to the backup of the file created using the BACKUP command.。 The copy of the datafile created can be used for recovering the database using the user-managed recovery method.。
简述游戏对学前儿童智力发展的作用。
Which task would you perform before you run Oracle Universal Installer （OUI） in silent or suppressedmode for an installation（）
