第17题: [单项选择]Where does the man want to post to 参考答案:A 答案解析:[听力原文]8-9
M: How long does it take for a letter to get to New York
W: It’ll take five or six days
第19题: [单项选择]肾后性氮质血症( ) A. 尿钠<20mmol/L,尿渗透压>500mOsm/kg B. 尿钠>20mmol/L,尿渗透压>250~300mOsm/kg C. 尿沉渣有多数变形红细胞 D. 尿中可见嗜酸性粒细胞 E. 尿沉渣有多数正常形态红细胞 参考答案:E
第20题: [单项选择]The procedures recommended for auxiliary boilers having high salinity include (). A. treating with oxygen scavengers B. securing the boiler and giving it a blowing down C. increasing the pH D. reducing the phosphate level 参考答案:B