胸部侧位片肺门区不显影的是() A.两上叶支气管 B.右上肺静脉干 C.左肺动脉弓 发布时间:2017-06-14 01:05 │ 来源:www.tikuol.com 题型:单项选择题 问题: 胸部侧位片肺门区不显影的是()A.两上叶支气管B.右上肺静脉干C.左肺动脉弓D.左下肺动脉E.左上肺静脉干
题型:单项选择题 下列条件语句中,功能与其他语句不同的是( )。A.if(a)printf("%d\n",x); else printf("%d\n",y);B.if(a==0)printf("%d\n",y); else printf("%d\n",x);C.if (a!=0)printf("%d\n",x); else printf("%d\n",y);D.if(a==0)printf("%d\n",x); else printf("%d\n",y); 查看答案
题型:单项选择题 改善砂浆和易性,砖应隔夜浇水,严禁干砖砌筑,铺灰长度不得超过500mm,宜采用"三一"砌砖法进行砌筑。这是预防()质量问题的有效措施。A.砂浆强度偏低、不稳定B.砂浆和易性差、沉底结硬C.砌体组砌方法错误D.灰缝砂浆不饱满 查看答案
题型:单项选择题 We all knew from the very ______ that the plan would fail. Now you see it becomes true.A.outbreak B.outcome C.outflow D.outset 查看答案