交流异步电动机改善磁场质量时,一般采用的方法为()
A.长距分布绕组
B.集中绕组
C.整距分布绕组
D.短距分布绕组
参考答案:A, C, D
Despite the rise in importance of major regional languages such as Chinese, Arabic or Spanish, to ever think that the development of English can now be stopped seems totally unrealistic.
A.voices tell
B.voices told
C.voices’ telling
D.voices telling
下列叙述中,不属于软件需求规格说明书的作用的是
A.便于用户、开发人员进行理解和交流
B.反映出用户问题的结构,可以作为软件开发工作的基础和依据
C.作为确认测试和验收的依据
D.便于开发人员进行需求分析