15个月女孩，腹泻4天于2007年10月入院。每日大便10次左右，蛋花汤样，水分多，伴有呕吐、尿少、轻咳。体检：T38．5℃，前囟、眼窝凹陷，皮肤弹性差，四肢稍凉。血WBC6．0×109/L，血Na+128mmol/L，K+3．6mmol／L，BE-15mmol／L。失水、代谢性酸中毒纠正后突然抽搐，此时应做哪项检查（）
A. 脑脊液
B. 头颅CT
C. 血糖测定
D. 血钠测定
E. 血钙测定
查看答案
正数斜率的无差异曲线是不存在。
A. 正确
B. 错误
Which statement is TRUE concerning equatorial tides（）.
A. They occur when the Sun is at minimum declination north or south
B. They occur when the Moon is at maximum declination north or south
C. The difference in height between consecutive high or low tides is at a minimum
D. They are used as the basis for the vulgar establishment of the port
一般来说，当落差较大时，陡坡比跌水经济。
A. 正确
B. 错误
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