【单选题】单片机的晶振为12MHz,则机器周期为:
【判断题】在以及为半径的圆周上均匀分布有n口干扰井,此时,圆心处的降深计算就相当于对流量等于井群总流量、井半径等于R的一个抽水大井的降深计算。
【判断题】上海商业储蓄银行的旅行部于1927年6月重新申请营业执照单独挂牌更名为中国旅行社,
【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。
【单选题】1个单片机的晶振为12MHZ,1个机器周期为( )微秒
【单选题】1923年上海商业储蓄银行设立的“旅游部”于1927 年更名为
【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.