贸易进口项下信息服务费,向银行提交:()
A.书面申请
B.进口合同
C.盖有海关“验讫章”的进口报关单
D.发票或支付通知
E.税务凭证
参考答案:A, B, C, D, E
三个电阻值均为10Ω的电阻R1、R2、R3串联后接在电压恒定为U的电路中,某同学误将一只电流表并联在电阻R2两端,如图,发现电流表的示数为1.5A,据此可知电源电压U为______V.
The magician picked several persons ________from the audience and asked them to help him with the performance.
A.by accident
B.at random
C.on occasion
D.on average