单选题
发布日期:2020-08-20
尿钠﹤20mmol/L
尿比重﹤1.O15
尿渗透浓度﹤350
尿肌酐/血肌酐﹤10
滤过钠排泄分数﹥1
农村留守妇女指的是因丈夫长期进城务工、经商或从事其它活动,而孤单地留居在农村的已婚妇女。中国农村“留守妇女”人数已达4700万,相当于韩国人口总数,人数之多令人咋舌。20世纪90年代初以来,改革开放释放出来的巨大能量使中国经济和社会发展突飞猛进。20年间,青壮年农民大规模进城打工、做生意,我国农村“男耕女织”的传统生存方式在许多地方已不复存在。但由于受户籍、住房、教育等约束,打工农民要携家带口在城市立足并非易事。所以,许多农民工不得不把家人留在农村,自己单枪匹马到城市闯荡。由此,农村便形成了一个以妇女、儿童和老人为主体的庞大留守群体,人称“386199部队”。
毒蛇,指能够分泌毒液的蛇。毒蛇一般体形不大,头呈三角形状,有毒牙。毒蛇的毒液一般储藏在毒牙中,在捕捉猎物或者自卫的时候通过毒牙喷出毒液,或者是咬住攻击对象之后再把毒液通过毒牙注射到攻击对象的体内。当毒液进入人体血管之后,毒液会通过血液循环流遍全身,从而使局部乃至全身分别引起不同的中毒症状,若不及时处理甚至可能会丧命。下面将详细介绍常见的毒蛇和被毒蛇咬伤之后的处理方法。
30岁主要指的是30岁的人,虽然还很年轻,但已是人到中年的“前奏曲”。此间步入婚姻生活的时间还不算长,初为人父母,但已开始感受太多的压力以及来自家庭和社会的各种义务,中年关注健康应该从30岁早早开始。
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