针对下列血清HBV标志物检测结果回答问题 HBV复制停止() ["A","B","C","D","E"]
男,25岁。肠梗阻已半月,近日来恶心、呕吐加重,视力模糊,双下肢肌肉抽搐频繁。体检:神智欠清,脉细数,血压75/53mmHg,血清钠117mmol/L,血清钾3.6mmol/L。应先快速给予() ["胶体溶液和晶体溶液","1.25%碳酸溶液","10%葡萄糖溶液","10%葡萄糖酸钙溶液","5%葡萄糖溶液+升压药"]
泵浦源的工作波长有两种() ["980nm","850nm","1650nm","1480nm"]
汽车车身的振动频率对乘员生理的影响较大,在1.1~1.4Hz范围时,能使乘员有()。 ["晕船感觉","冲击感","较舒适感","不舒适感"]
矿井定向的方法一般采用()。 ["一井定向","二井定向","陀螺定向","通过平硐或斜井直接引测","GPS定位定向"]
新成立公司,不知是否需要办理社会保险登记证?