【单选题】【消耗次数:1】
图样中标注的螺纹长度均指( )。
包括螺尾在内的有效螺纹长度
不包括螺尾存内的有效螺纹长度
包括螺尾在内的螺纹总长度
不包括螺尾在内的完整螺纹长度
参考答案:
复制
纠错
相关题目
【单选题】 安装螺口灯时,应将螺纹接线端接在()。
①  都可以
②  地线
③  零线
④  火线
【单选题】 组合攻丝机床加工螺孔的工艺方法是用()加工螺纹。
①  滚刀
②  钻头
③  镗刀
④  丝锥
【单选题】 在螺纹联接中最常用的螺纹牙型是()
①  锯齿形螺纹
②  矩形螺纹
③  三角形螺纹
④  梯形螺纹
【单选题】 框架柱平面内计算长度确定不包括()
①  对整个框架的稳定性分析确定
②  需要区分框架有无侧移
③  需要考虑横梁线刚度与柱线刚度之比
④  由纵向支点间距确定
【单选题】 不能用于传动的螺纹为()螺纹。
①  靠近齿顶处
②  靠近齿根处
③  节线附近的齿顶一侧
④  节线附近的齿根一侧
【单选题】 不能用于传动的螺纹为()螺纹。
①  梯形
②  锯齿形
③  三角形
④  矩形
【单选题】 查询订购单号(字符型,长度为4)尾字符就是1的错误命令就是
①  SELECT * FROM 订单 WHERE SUBSTR(订购单号 ,4)=1
②  SELECT * FROM 订单 WHERE SUBSTR(订购单号 ,4,1)=1
③  SELECT * FROM 订单 WHERE 1$订购单号
④  SELECT * FROM 订单 WHERE RIGHT(订购单号 ,1)=1
【单选题】 普通螺纹的公称直径是指螺纹的( )。
①  小径
②  底径
③  顶径
④  大径
【单选题】 螺纹传动的主要参数( )
①  螺杆的直径
②  以上为正确答案
③  螺纹部分的长度,螺距,线数
【单选题】 决定单元槽段长度的因素不包括()
①  当土层不稳定时,为防止槽壁倒塌,缩短挖槽时间,应减少单元槽段长度
②  较大的地面荷载及相邻高大建筑物,会增大槽壁受到的侧向压力,影响槽壁稳定性,此时,应缩短单元槽段长度,以缩短槽段开挖与暴露时间
③  挖槽机械的种类
④  单位时间内混凝土的供应能力
随机题目
【单选题】 I _____ the right to appeal to higher authorities.
①  conserve
②  reserve
③  store
④  remain
【单选题】 Xiao Lu won a ______ at the tennis match.
①  prize
②  price
③  praise
④  present
【单选题】 It s surprising that this idea took so long to _______.
①  add to
②  dispose of
③  catch on
④  absorb in
【单选题】 The problem is () it may take time for new facts to become available.
①  that
②  how
③  what
④  if
【单选题】 Mr. Clinton, together with his wife and children, _______ going to the park next weekend.
①  is
②  has
③  are
④  was
【单选题】 Since evidence of the fraud came to light, Congress has been demanding a ______ investigation.
①  horrible
②  thorough
③  thoughtful
④  weird
【单选题】 If it were not for the fact that he was a millionaire, she ____ him.
①  might never marry
②  will never marry
③  would never have married
④  would never marry
【单选题】 On his next birthday he () married for ten years.
①  has been
②  will be
③  will have been
④  would have been
【单选题】 Hi, welcome back! Had a nice trip?____________
①  Oh, fantastic! Fresh air, and sunshine every day.
②  Come on, I’ve got lots of fun.
③  By the way, I don’t like Saturdays.
④  Well, I’ll look forward to your phone call.
【单选题】 In Britain people drive _____the left.
①  at
②  on
③  to
④  in