【判断题】According to the tenor, bills of exchange can be classified into clean bills of exchange and documentary bills of exchange.
【简答题】Question 8 Explain: (a) Acceptance of bills of exchange. (b) General acceptance. (c) Qualified acceptance.
【简答题】革兰氏阳性菌特有的细胞壁成分是( ),革兰氏阴性细菌特有的细胞壁成分是( )、脂蛋白、磷脂以及膜蛋白和孔蛋白。