第29题: [单项选择]糖化血红蛋白的主要成分是()。 A. HbAla B. HbF C. HbB D. HbAlb E. HbAlc 参考答案:E
第30题: [单项选择]A tug is towing three manned barges in line in fog. The first vessel of the tow should sound (). A. no fog signal B. one short blast C. one prolonged and three short blasts D. one prolonged,one short,and one prolonged blast 参考答案:A