洛伐他汀的5-内酯环水解之后，抑制羟甲戊二酰辅酶A还原酶，从而产生降血脂作用，洛伐他汀直接发挥酶抑制作用的药效基团是（  ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='24969' and id < 2127287 and id<>'2127287' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24969' and id > 2127287 and id<>'2127287' order by id asc limit 5