患者腰痛，腹胀，尿血，腰腹部肿块，纳差呕吐，气短乏力，便溏，宜选方
A．八正散
B．大补元煎
C．左归丸
D．金匮肾气丸
E．附子理中丸
参考答案：B
—_____
—Sorry. She isn't at home now.[ ]
A. Are you Jim?
B. Do you know Linda?
C. May I speak to Linda?
D. Can I help you, Jim?
煤电钻综合保护装置必须每（）使用前进行一次跳闸试验。
A.班
B.天
C.次
