货物运输业增值税专用发票税控系统中,下面哪个不属于“认证结果”?() ["认证相符","认证不符","密文有误","网上认证"]
砌筑墙体的砂浆主要有() ["石灰砂浆","水泥砂浆","石膏砂浆","石英砂浆","混合砂浆"]
在船舶轴系中装设液力耦合器,这属于()。 ["主动隔振","被动隔振","振动利用","B+C"]
税收的特点包括()。 ["强制课征","无偿课征","固定限度","由国家课征","为实现国家职能课征"]
货运增值税专票用户,登记监控数据需填写下面哪一项?() ["单张开票最高限额","退票限定天数","退票累计金额限额","发票开票累计金额限额"]
扫描电镜图像的几种衬度是如何形成的?