【单选题】在数据库中,( ) 不属于关系模型中常用的术语。
【判断题】Head-Smashed-In Buffalo Jump is a cliff over which herds of buffalo plunged to their demise.
【简答题】A.More buffalo are surviving the winter. B.Fewer buffalo are dying of disease. C.More buffalo are being born. D.Fewer buffalo are being killed by hunters.
【单选题】According to the professor, why is the buffalo population increasing?
A.
More buffalo are surviving the winter.
B.
Fewer buffalo are dying of disease.
C.
More buffalo are being born,
D.
Fewer buffalo are being killed by hunters.
【单选题】有关革兰阴性杆菌脓毒症的临床特点中,下列不正确的是()
A.
常见为大肠杆菌、铜绿假单胞菌、变形杆菌、克雷伯菌
E.
可出现"三低"现象,即低体温、低白细胞、低血压