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【多选题】
下列关于热处理钢筋的说法，正确的是( )。A.
钢材的热处理是通过加热、保温、冷却等过程以改变钢材性能的一种工艺
B.
热处理钢筋是用几种特定钢号的热轧钢筋，经过淬火和回火处理而成
C.
钢筋经淬火后强度大幅度提高，但塑性和韧性相应降低，通过高温回火则可以在不降低强度的同时改变淬火形成的不稳定组织，消除淬火产生的内应力，使塑性和韧性得到改善
D.
热处理钢筋是一种较理想的预应力钢筋
E.
其特点是强度高，与混凝土的黏结好
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【简答题】风险和费用转移在不同时间的有_______。
【简答题】风险和费用转移在不同时间的有_______。
【简答题】Task 1. Pair Work Act out the sample dialogue with yourpartner. 2. Group Discussion Work in groups. Discuss the followingpoints and prepare to report to the class. ➢ What are the necessary qualitiesfo...
【简答题】Task 1. Pair Work Work in pairs. Act out the sample dialogue with your partner. 2. Group Discussion Work in groups and share your views on the following questions. 1)What was your dream job when you w...
【单选题】Mrs green is out. I have to _____ her baby. [ ]
A.
look for
B.
look up
C.
look after
D.
look around
【单选题】Mrs. Green is out. I have to ___________ her baby.
A.
look after
B.
look up
C.
look for
D.
look around
【单选题】Mrs. Green is out. I have to ________ her baby. [ ]
A.
look around
B.
look up
C.
look for
D.
look after
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