探测矿井下冒顶事故先兆的方法有三种:()、敲帮问顶法、振动法。 ["木楔法","爆破法","测压法","对流法"]
肠管迅速膨胀,肠壁变薄,可引起等渗性缺水()持续性腹痛,血便,肠鸣音微弱或消失,有腹膜刺激征()呕吐粪样内容物,高度腹胀() ["A.低位肠梗阻","B.急性完全性肠梗阻","C.麻痹性肠梗阻","D.绞窄性肠梗阻","E.动力性肠梗阻"]
提升钢丝绳必须()检查一次。 ["每周","每天","每月"]
“一炮三检”指在装药前、放炮前和放炮后要检查()。 ["瓦斯","放炮器","泡泥","氧含量"]
肠粘连、绞窄性腹外疝及小肠扭转所致的肠梗阻多见于()肠道畸形所致的肠梗阻多见于()肿瘤、乙状结肠扭转及粪块堵塞所致的肠梗阻多见于() ["A.老年人","B.青壮年","C.2岁以内小儿","D.3岁以上儿童","E.新生儿"]
腹部不适,无力,消瘦,发热伴贫血,粪便带脓血或黏液()腹痛,腹胀,便秘或腹泻,不完全性低位肠梗阻()腹泻,脓血便及黏液,腹痛轻,多在左下腹()腹泻,1天多次,粪不成形但无脓血,有时便正常,伴低热,营养不良,贫血乏力()