低温热水热网的最高温度是（）℃。 75。 80。 90。 95。
职工应当参加职工基本医疗保险，由用人单位和职工按照国家规定共同缴纳基本医疗保险费。
our database is in the MOUNT state and you execute the following command to open it： ALTER DATABASE OPEN What two actions are performed as a result of this command？（） All control files are opened.。 All redo log files are opened。 The password file is opened.。 The parameter file is opened.。 All online data files are opened.。
相关研究表明，使用精美逼真的玩具进行游戏，更多地促使儿童（） 模仿。 记忆。 思考。 创造。
Your database operates in ARCHIVELOG mode and all the tablespaces are online. Due to a user error， you decided to perform an incomplete recovery. Which two tasks would you be required to perform in the recovery process？（） open the database with the RESTRICTED option。 open the database with the RESETLOGS option。 recover to the required SCN only that data file in which the error occurred。 recover all the data files to the same system change number （SCN）。
You are developing a report to allow customers in a department store to view product information. You added a button to the layout to allow customers to view the picture of the product. Which button property would you alter to specify the source of the .BMP file?（）
