题目内容

关于周邦彦的《六丑》,下列选项正确的是()。

A. 是一首“中吕调”曲
B. 共有一百四十字
C. 前片九仄韵,后片八仄韵
D. 是用六种不同的曲调拼在一起

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贷记卡交易明细出现()即表示该卡当月已逾期。

A. 利息
B. 滞纳金
C. 超限费

川乌炮制降毒的程度,取决于双酯型生物碱的水解程度。

A. 正确
B. 错误

You are working in an online transaction processing (OLTP) environment. You use the FLASHBACKTABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command, the system change number (SCN) was 663571. After flashing back the CUSTOMERS table, you realize that the table is not in the correct state. Now, you need to reverse the effects of the FLASHBACK TABLE command. Which is the fastest and the most efficient option to reverse the effects of the FLASHBACK TABLE command?()

A. Restore the backup control file and open the database with RESETLOGS option.
B. Perform point-in-time recovery because flashback cannot be performed again on this table
C. Execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571
D. Execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571

单相制零线的截面,()。

A. 不应小于相线截面的30%
B. 不应小于相线截面的50%
C. 不应小于相线截面的80%
D. 应与相线的截面相同

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