第8题: [单项选择]霍乱弧菌生物特性叙述正确的是 A. 分解糖类产酸产气 B. 不分解糖类 C. 分解糖类产酸不产气 D. 氧化酶阴性 E. ONPG试验阴性 参考答案:C
第9题:[单选题]16.Which of the following statements with regard to international economics is true? A.A.It is a relatively new field B.B.it is a relatively old field C.C.most of its contributors were not economists D.D.none of the above1. 参考答案:B