The speaker       his voice so that he could make himself heard in the noisy street. [ ]

A.raised

B.rose

C.lifted

D.brought

工程师直接收到客户的重大故障类问题如；重大瘫机、一级问题等申告后必须在第一时间（）分钟内通报至（），并立即响应客户，首先远程指导客户恢复紧急故障。