A. 红细胞沉降率增高 B. 尿本-周蛋白试验阴性 C. 血清β2-微球蛋白增高 D. 血清乳酸脱氢酶含量增高 E. 出现异常免疫球蛋白
A. 正确 B. 错误
A. the elimination of valve wear B. improved atomization C. a decrease in cylinder blow-by D. an increase in cylinder blow-by