题目内容
(请给出正确答案)
[单选题]
对于w(Cr)/w(Ni)≥1的奥氏体不锈钢,如1Cr18Ni9Ti,为满足焊缝金属抗热裂能力和焊接接头的高温性能,应采用()不锈钢焊条。
A.奥氏体型
B.超低碳型
C.奥氏体-铁素体型
D.含Mo
答案
查看答案
A.奥氏体型
B.超低碳型
C.奥氏体-铁素体型
D.含Mo
第1题
A.w(Cr)/w(Ni)≥1的铁素
B.马氏
C.w(Cr)/w(Ni)≥1的奥氏
D.珠光
第11题
听力原文:W: Look here, Peter. The Nile is longer than the Mississippi.
M: Maybe. But the Nile doesn't have as much river traffic.
Q: What ate the man and woman probably doing?
(14)
A.Walking.
B.Driving.
C.Reading a book.
D.Rowing a boat.