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安全气囊系统的英文缩写为( )
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【简答题】Scientists study the world and learn about things using a process called the scientific method(方法). By asking important questions and 16 the answers, it is possible to make amazing discoveries! Someti...
【判断题】若MCS-51单片机的晶振为6MHz,其机器周期为1μs。( ) 【参考答案】 若MCS-51单片机的晶振为6MHz,时钟周期是主频的倒数=(1/6 MHz)=(1/6)μs。一个机器周期包含12个时钟周期,其机器周期为(1/6)*12=2μs。
A.
正确
B.
错误
【简答题】旅游业在我国的出现可以追溯到1923年,上海商业银行的 成立了上海商业储蓄银行旅行部,在1927年6月该旅行部更名为中国旅行社。
【单选题】Ethnography is the study of a particular human society or the process of making such a study. Contemporary ethnography is based almost entirely on fieldwork and requires the complete immersion of the ...
A.
The people who answer his questions.
B.
His own cultural background.
C.
The kind of information he wants to get.
D.
The changes made by his presence in the culture in question.
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