●Unit testing refers to that each (73) is tested to ensure that it operates corr
●Unit testing refers to that each (73) is tested to ensure that it operates correctly.
(73)
A. subsystem
B.device
C.application
D.module
正确答案：D
词条内容仅供参考，如果您需要解决具体问题
（尤其在法律、医学等领域），建议您咨询相关领域专业人士。