800业务是指什么付费业务？（）
A.主叫集中付费业务
B.被叫集中付费业务
参考答案：B
The nurse is caring for a client with cholelithiasis. Which sign indicates obstructive jaundice ？（）
A．Straw-colored urine.
B．Reduced hematocrit.
C．Clay-colored stools.
D．Elevated urobilinogen in the urine.
黄土汤主治 。
