【简答题】Jane was a few minutes late. Smith had 1 the office when she got there. His secretary( 秘书 )told her he would be back in a few minutes. She had to sit down and 2 outside the office. “ I ’ ll 3 get this...
【单选题】汽轮机的保护装置包括超速保护装置、( )和低油压保护装置等。
【判断题】汽轮机的自动保护项目通常包括超速、甩负荷、凝汽器真空低、轴承油压过低。
【单选题】技术交底应在施工作业前由( )进行交底。