呼吸性酸中毒最先应解决的问题是()
A.应用中枢性的呼吸兴奋剂
B.进行人工通气
C.控制肺部感染,使用大量有效抗生素
D.给予碱性液体
E.解除呼吸道梗阻,改善肺换气功能
参考答案:B
You ought to have had Tedy ________ Janet for his rudeness at the meeting yesterday. [ ]
A. to apologize
B. apologize to
C. apologized to
D. making an apology
保护树木必须保护树皮.这是因为树皮中有输导______的筛管.破坏脊髓后的青蛙,不再具有反射活动.其原因是______被破坏.