三角线、转盘线是（）所属的段管线。
A.车辆段
B.机务段
C.工务段
D.电务段
参考答案：B
下列哪项病损表现不可能为机械性刺激所致
A．糜烂、溃疡
B．炎性增生
C．充血水肿
D．白色角化
E．组织坏死
________ children whose parents had died in the earthquake________ sent to live with families in other cities.
A．A great number of ; was
B．The great number of ; was
C．A great number of ; were
D．The great number of ; were
