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VB中,mid("A2B4",2,1)的值是()
李某,男,40岁。因发作性心悸3年入院,每次心悸发作均突发突止,持续约5~15分钟不等,有时做屏气动作即可终止。不发作时心电图示:P-R间期0.10秒,QRS波群0.14秒,QRS波群起始部分粗钝,络末部分正常;T波与QRS波群主波方向相反。病人心悸的原因最可能是()
在通常工作状态下,司机修改以下哪项参数,不可能导致LKJ降级()
商业银行的业务大体上可以分为三类:()。
盲人按摩机构、工疗机构登记中安置残疾人的用人单位,在向税务机关申请免税前,应当先向()提出认定申请。
最常应用的快速起效的静脉利尿药为()
通用货车装用的脱轨自动制动阀及拉环有两种规格以油漆颜色来区分,黑色装用在()型转向架上。
区别不同社会形态的根本标志是()
社会化的社会主体包括()。
以下关于矿井联系测量的做法,正确的是( )。
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