在单纯形表中进行迭代时，在b列中得到的是原问题的（），在检验数行得到的是对偶问题的基解。
参考答案：基可行解
— Do you know whether they talked about their work or their family
— As _______matter of fact, I couldn't hear it clearly, as they talked in ______whisper.[ ]
A. the; a
B. a; a
C. the; the
D. a; the
鉴别肾盂肾炎和下尿路感染最有意义的是
A．尿频、尿急、尿痛B．高热、腰痛C．尿细菌培养阳性D．尿中白细胞管型E．血尿
