（）不一定要求受益人提交汇票。
A.即期付款信用证
B.延期付款信用证
C.承兑信用证
D.议付信用证
参考答案：A, B, D
Hangzhou is famous _____ silk in China. [ ]
A. from producing
B. from produce
C. for producing
D. for produce
股道号码信号八道昼间如何显示？
