民法
You are managing the Oracle database. Which of the following choices correctly identifies when Oracle reads the contents of the init.ora file?（） When the instance is started 。 When the database is mounted 。 When the database is opened 。 When the database is closed。
汽车在上坡时用高速可以挡勉强行驶时，就无需降挡行驶。
晶体长大过程中，要使液固界面稳定迁移，就必须使界面能量始终保持最低状态，实验表明只有两种界面：（）和（）；
在汽车正常行驶时，左脚应始终放在离合器踏板上，以保证换挡的及时性。
You plan to take a closed database backup using operating system commands. Which three SHUTDOWN options are appropriate for this type of backup？（）
