企业使用的是HX2金税卡,在一机多票开票子系统V6.15中开具出的发票密文是()位。 ["20.0","84.0","104.0","108.0"]
铜的生产方法有()和湿法两大类
流体流过任一截面时,需要对流体作相应的功,才能克服该截面处的流体压力,所需的功,称为() ["位能","动能","静压能","外加能量"]
商品入库业务流程的第一道作业环节是() ["接运","内部交接","验收","保管保养"]
通信系统的抗噪声性能是指系统克服加性噪声的能力,在数字系统中通常采用()来衡量。 ["误信率","速率","误码率","信噪比"]
所有者权益变动表