为保证阀门关闭严密,闸板与阀座上镶嵌耐磨、耐蚀的金属材料。
参考答案:对
No one knew ________. [ ]
A. she will come
B. if she would come
C. if she would come or not
D. whether she will come or not
女性,29岁,发热、关节痛1个月,头晕、头痛3天,血压160/130mmHg,左上肢未触及动脉搏动,血Cr196gmol/L,尿常规蛋白(+),最可能的诊断为().
A.慢性肾小球肾炎
B.原发性高血压
C.多发性大动脉炎
D.动脉粥样硬化
E.急进性肾小球肾炎