【单选题】【消耗次数:1】
普通灰口铸铁组织中,不应有下列哪种渗碳体出现?()
一次渗碳体
二次渗碳体
三次渗碳体
一次渗碳体和二次渗碳体
参考答案:
复制
纠错
相关题目
【单选题】 钢中的二次渗碳体是指从( )中析出的渗碳体。
①  从钢液中析出的
②  从奥氏体中析出的
③  从铁素中析出的
④  从马氏体中析出的
【判断题】 白口铸铁在室温下的相组成都为铁素体和渗碳体。
①  正确
②  错误
【判断题】 渗碳体是钢中常见的固溶体相。
①  正确
②  错误
【单选题】 过共析钢因过热而析出网状渗碳体组织时,可用下列哪种工艺消除?()
①  完全退火
②  等温退火
③  球化退化
④  正火
【判断题】 对过共析钢工件进行完全退火可消除渗碳体网。
①  正确
②  错误
【判断题】 第三次分配可以代替一次分配和二次分配。
① 
② 
【判断题】 do while循环的循环体至少执行一次。
①  正确
②  错误
【单选题】 循环体至少被执行一次的语句为()
①  for循环
②  while循环
③  do循环
④  任一种循环
【单选题】 循环体至少被执行一次的语句为()。
①  for循环
②  while循环
③  do循环
④  任一种循环
【单选题】 循环体至少被执行一次的语句为(????)
①  for循环
②  while循环
③  do循环
④  任一种循环
随机题目
【单选题】 How many [填空] do you see in the kitchen?
①  tomatos
②  tomatoes
③  tomato
④  the tomato
【单选题】 Zhao Benshan, whose overwork __________ his health failure, is said to have performed in the Spring Festival Gala on CCTV in 2011.
①  contributed to
②  appealed to
③  applied to
④  owed to
【单选题】 The athletes years of hard training __________ when she finally won the Olympic gold medal.
①  went on
②  got through
③  paid off
④  ended up
【单选题】 The teacher [填空] us to have lessons on time.
①  ask
②  asking
③  asks
④  asked
【单选题】 Jan [填空] over there.
①  is
②  are
③  am
④  was
【单选题】 Please get me a new [填空] when you go back home.
①  clothes
②  dress
③  clothing
④  trousers
【单选题】 She cant get down to work because she was deeply __________ by the news of his death.
①  surprised
②  affected
③  harmed
④  charged
【单选题】 It [填空] him half an hour to write the letter.
①  take
②  takes
③  took
④  taking
【单选题】 How many [填空] would you like?
①  paper
②  bread
③  pieces of papers
④  pieces of bread
【单选题】 The weather is [填空] hot
①  too
②  much
③  more
④  many