患者男性，38岁，高血压、蛋白尿、水肿多年。1年前曾查血Cr220μmol/L，B超

结核病的传染源主要是（）。

A.排菌的病人

B.所有活动性肺结核病人

C.肺内有空洞性病变的患者

D.血行播散型肺结核患者

E.对抗结核化疗效果不明显的患者

现代化种猪场常用（）作为衡量养猪生产水平和经济效益的综合分析指标。

Woman: Hello, this is Doctor Gray's office. We're calling to remind you of your 4:15 appointment for your annual check-up tomorrow.Man: Oh, thanks. It's a good thing you called. I thought it was 4:15 today.Question: What do we learn from the conversation

A．The man was confused about the date of the appointment.

B．The man wants to change the date of the appointment.

C．The man is glad he's got in touch with the. doctor.

D．The man can't come for the appointment at 4:15.

清退虚热的药物是（）

A.青蒿

B.白薇

C.地骨皮

D.银柴胡

E.胡黄连

直流电机的换向极绕组一般和电枢绕组并联。