—Where is your brother?   

—He has gone to Beijing. He         back in three days.

A．will come

B．comes

C．has come

D．came

管理急救物品应做到"五定"，其内容不包括

A．定时使用
B．定期消毒、灭菌
C．定期检查维修
D．定数量品种
E．定点安置、定入保管