检修拆卸液力偶合器应注意什么？

A. when a DELETE statement is executed
B. when a ROLLBACK command is executed
C. when a PL/SQL anonymous block is executed
D. when a data definition language (DDL) statement is executed
E. when a TRUNCATE statement is executed after the pending transact io

A. 定期巡视
B. 故障巡视
C. 特殊巡视
D. 以上都不对