当连续昼夜平均气温低于()℃或最低气温低于()℃时,应按冬期施工处理。
A、3,0,-3
B、2,5,0
C、3,5,-3
参考答案:C
22.The site is fairly near the city center, ___ it can only be reached by a series of narrow streets.
A.and
B.but
C.or
D.So
导致小儿鹅口疮发生的原因有()
A.孕母体内蕴积热毒,遗患胎儿
B.生后护理不当,口腔不洁
C.病后用药不当,正气受损
D.先天禀赋不足,素体阴虚
E.久病伤及肾阴,虚火上炎