电子巡航控制系统ECU(电脑),整个控制器采用了()个运算放大器。
A.一
B.二
C.四
D.三
参考答案:C
用所给单词的适当形式完成句子
1. Do you know how (get) to the nearest hospital?
2. Shanghai is one of the (big) cities in the world.
3. They had a hard time (find) the hotel.
4. He prefers (stay) at home rather than go to her party.
5. There are different (kind) of food in the world.
患者女,29岁,因“极度烦渴、多饮、喜饮凉水、尿量多近1个月”来诊。尿量8~9L/d。实验室检查:尿糖(-),餐后2h血糖5.6mmol/L。
为确诊此患者是否为尿崩症,首选检查为()
A.禁水试验
B.测量每日尿量
C.测量血浆渗透压
D.禁水-加压素试验
E.测量尿渗透压