输油管道工程应依法建设，合法使用。设计、施工、验收及投产应按照国家有关规定办理相关手续。（）方可投入生产使用。
参考答案：验收合格后
The doctor assured the patient that there was ______ with her, but she could not help worrying.
A．seriously wrong nothing
B．nothing serious wrong
C．nothing seriously wrong
D．serious nothing wrong
低密度脂蛋白胆固醇（）
A．LDL—ch
B．TC
C．AMY
D．VLDL—ch
E．TG
