Complete the sentences with words or expressions from the boxes.sightseeingfigure outgot paid forendlesspilotsolution1. These workers __________ the repairs to the roof.2. We can go __________ downtown tomorrow.3. He is training to be an airline __________.4. We had to __________ the connection between the two events.5. They asked __________ questions about our hometown.6. A good __________ is to harvest the crop early in September.
关于提速道岔防松螺母养护,下列()的提法是不正确的。
A. 防松螺母松动后,应先松开上螺母,按扭矩拧紧下螺母后,再拧紧上螺母
B. 严禁上、下螺母一起拧紧
C. 严禁只拧紧上螺母
D. 上、下螺母的间隙可以挤死
下列关于尖轨与基本轨不密贴原因的叙述,( )是不准确的。
A. 尖轨顶铁过长,补强板螺栓凸出
B. 曲基本轨弯折点位置不对,造成转辙器部分轨向不良
C. 基本轨或尖轨本身有硬弯
D. 基本轨、轨撑、滑床板挡肩之间存在“三道缝”
固定型辙叉接头冻结应采用高强螺栓,扭矩应保持()。
A. 400N•m
B. 500N•m
C. 700N•m
D. 1100~1400N•m