[单选] Your boss at Certkiller .com wants you to clarify Oracle 10g. Which statement regarding the usage of redo log files during instance recovery is true？（）

A . Transactions are rolled back using redo log files.
B . Transactions are rolled forward using redo log files.
C . Transactions are rolled back using redo log files and archived log files.
D . Transactions are rolled forward using redo log files and rolled back using redo log files.

某工程地上设备层高为2.5m，其照明的电压不得大于（）V。 12。 24。 36。 220。试分析往复式压缩机连杆常见的故障。摩擦学研究的基本方法 Given: What is the result？（） Compilation fails.。 An exception is thrown at runtime.。 [608， 610， 612， 629] [608， 610]。 [608， 610， 612， 629] [608， 610， 629]。 [606， 608， 610， 612， 629] [608， 610]。变压器真空注油后保持规定的真空度不少于（）。 8小时。 4小时。 24小时。 Your boss at Certkiller .com wants you to clarify Oracle 10g. Which statement regarding the usage of redo log files during instance recovery is true？（）

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[单选] Your boss at Certkiller .com wants you to clarify Oracle 10g. Which statement regarding the usage of redo log files during instance recovery is true？（）

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