对于中性点可接地或不接地的变压器需要装设零序电流保护和()。
参考答案:零序过电压保护
The child tiptoed quietly to the bird.___into the forest when he was about to catch it.
A.Flew it away
B.Away flew it
C.Away it flew
D.Flew away it
患者腹泻1d,日达4~5次,水样便,无明显里急后重。便常规:脓细胞0~2个/ HP,红细胞1~3个/HP,便涂片染色见革兰阴性弯曲且排列成鱼群状细菌,悬滴法见运动快的细菌,该患者最可能诊断为
A.细菌性痢疾
B.阿米巴痢疾
C.轻型霍乱
D.肠滴虫病
E.急性肠炎