在正常情况下,鼠笼式电动机,允许在冷状态下起动2~3次,每次间隔时间不得小于()。
A.12min;
B.10min;
C.5min;
D.8min。
参考答案:C
You may come to my home _______next Sunday. [ ]
A. sometime
B. some time
C. sometimes
D. some times
试述电视作为广告媒体的优势。