承兑交单的起算日应为（）
A.出票日
B.付款人见票承兑日
C.付款日
D.托收日
参考答案：B
________ by the problem that was put forward at the meeting，the people in the audience
had ________ looks on their faces.[ ]
A ．Puzzled；puzzling
B．Puzzled；puzzled
C．Puzzling；puzzling
D．Puzzling；puzzled
Smith降解法是（）
A.稀酸水解法
B.强酸水解法
C.碱水解法
D.酶水解法
E.氧化开裂法
