筛选肠杆菌科的细菌,首选培养基是()
A.普通肉汤
B.鲜血琼脂
C.麦康凯培养基
D.疱肉培养基
E.普通琼脂培养基
参考答案:C
______to use in April,2005,the road has solved the long-standing problem of traffic jams of this area.
A.Put
B.Putting
C.Having put
D.Being put
保险公司可以在证券交易所债券市场上参与记账式国债的招标发行和竞争性定价过程。( )