( )是指在同一期货市场的不同到期期限的期货合约之间进行的套利交易。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25449' and id < 2143432 and id<>'2143432' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25449' and id > 2143432 and id<>'2143432' order by id asc limit 5