为保证食品安全,下灌注管的清洗消毒不能与含()的消毒液接触。
A、氯
B、碘
C、铝
D、金属离子
参考答案:A, B
当急性肾衰进入恢复期后,但肾小管尚有轻度障碍,检测指标仍增高的指标是
A.血肌肝和血尿素
B.尿比重和尿渗量
C.尿β2-MG和尿THP
D.血Na+、K+、Cl-
E.血钙和血磷
An analyst does research about tax-exempt bonds. An investor with 28% marginal tax rate purchase a tax-exempt bond yielding 3.5%. The investor's taxequivalent yield is closest to:()
A. 2.52%
B. 4.86%
C. 12.50%