对某癌症疼痛的患者，实施脊神经后根切断，该治疗疼痛的方法属于（）
A.心理疗法
B.药物疗法
C.介入疗法
D.手术疗法
E.物理疗法
参考答案：D
不能作为化学气体灭菌剂的是（）
A.乙醇
B.过氧醋酸
C.甲醛
D.丙二醇
E.环氧乙烷
Because Web servers are platform and application (17) ，they can send or request data from legacy or external application including database．All replies，once converted into (18) mark up language，can then be transmitted to a (19) ．Used in this way，Intranets can (20) lower desktop support costs，easy links with legacy application and databases and， (21) all。ease of use．
A．off B．offer C．office D．officer
