均小骨盆是指骨盆各经线均较正常值小A.0.5cm B.1cm C.1.5cm D.2 发布时间:2017-06-02 12:13 │ 来源:www.tikuol.com 题型:单项选择题 问题: 均小骨盆是指骨盆各经线均较正常值小A.0.5cmB.1cmC.1.5cmD.2cmE.2.5cm
题型:单项选择题 At weekends in Nanjing, you can often see many people _____ outside some restaurants,_____ to have dinners.A. sit; wait B. seated; waiting C. seating; waiting D. sitting; wait 查看答案
题型:单项选择题 某农药厂焊工准备进入直径1m,高2m的繁殖锅内焊接挡板。因未有排烟设施,采用了氧气置换,使锅内烟气消失,当焊工进入锅内施焊动火时,发生强烈燃烧。该焊工严重烧伤抢救无效死亡。进入容器内施焊,应采取什么安全措施?()A.容器内作业应设通风装置B.通风风源应为压缩空气C.通风风源应为氧气D.应有人监护E.容器内作业安全行灯的电压应为12伏 查看答案