商品化会计核算软件开发销售单位在售出软件后应承担售后服务工作,在下列工作中,( )不是软件开发销售商必须提供的。
A. 对用户进行软件使用前的培训
B. 对用户的软件进行维护
C. 对用户的硬件进行维护
D. 对用户的软件版本进行更新
以下哪项不是急性骨髓炎的超声征象
A. 出现骨膜下脓肿,呈带状无回声区
B. 骨膜被掀起,呈拱形抬高并增厚
C. 有时可在骨周出现脓肿无回声区
D. 骨皮质破坏,呈致密而不规则的强回声
E. 骨质中出现不规则低回声区,内有斑点样强回声
下列行为正确的是:( )
A. 用口尝药品味道
B. 从试剂瓶中倒液体时,标签向着手心
C. 用移液管取不同液体
D. 用PH计测脱脂剂的PH=15.56
It can be inferred from the passage that when Virchow studied at Friederich Institute, some people believed that______.
A. pathological histology was undeveloped
B. most diseases were caused by phlebitis
C. diseases were created at the cellular level of the body
D. medical education should be based on physiology