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【简答题】
一空心长螺线管的半径为a，长为2l，单位长度的匝数为n。另一半径为R的圆形导线回路的轴线和中心与此螺线管重合。
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举一反三
【单选题】The results of the survey are interesting and they ______ more questions than they can answer.
A.
bring about
B.
prohibit
C.
project
D.
benefit from
【多选题】已经注册的商标，有下列原因之一的，可以导致被撤销( )。
A.
违反《中华人民共和国商标法》第8条禁用条款的规定
B.
用欺骗手段取得注册商标
C.
与前已注册的商标相混同而被提起商标争议
D.
侵犯他人合法的在先权利进行注册的
【单选题】Women are more likely to use（ ）.
A.
the survey method
B.
the traditional method
C.
the route method
D.
the right method
【单选题】一张完整的零件图应包含的内容有（）。
A.
一组视图、尺寸标注、技术要求、标题栏
B.
一组视图、尺寸标注、粗糙度、标题栏
C.
三个视图、尺寸标注、技术要求、标题栏
D.
三个视图、尺寸标注、公差配合、标题栏
【简答题】According to the survey, students and children formed more than 50% of the visitors to Euro Disneyland last year. (account for)
【单选题】Which of the following is more likely to be the source for problems in this survey?
A.
This survey is tilted in favor of local alcohol distributors, who have a conflict of interest with online sellers.
B.
The data collection and analysis are not scientific and logical.
C.
Subjects are not sampled in a right way and can not represent the whole American teenage population.
D.
The survey results are affected by gifts to subjects, which can be misleading.
【单选题】More than 100 thousand people participated in the survey.
A.
Right
B.
Wrong
C.
Not mentioned
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