沪深300股指期货合约的交易指令主要有限价指令、市价指令、止盈指令和止损指令。
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The instance abnormally terminates because of a power outage. Which statement is true about redo log filesduring instance recovery()
A. Inactive and current redo log files are required to accomplish recovery.
B. Online and archived redo log files are required to accomplish instance recovery.
C. All redo log entries after the last checkpoint are applied from redo log files to data files.
D. All redo log entries recorded in the current redo log file until the checkpoint position are applied to data file
TCP/IP的网络层还包括()。
A. 互联网络控制消息协议ICMP
B. 地址解析协议ARP
C. 反向地址解析协议RARP
D. 传输控制协议TCP
E. 邮局协议版本POP3
军旗不得自行制作,不得外借。
A. 正确
B. 错误
二手商品作退货退款处理的,买家将退货二手商品交付承运人后,商品破损的风险由卖家承担,交易支持退款;若商品出现损毁、灭失情形的,交易支持打款,买家有权向()求偿。
A. 卖家
B. 供应商
C. 厂家
D. 承运人