【单选题】John _____________ a stamp for his letter. [ ]
【单选题】十进制54转换为2进制/8进制/16进制及8421BCD码
A.
二进制110110 ,八进制 66 ,十六进制 36 ,8421BCD码01010100
B.
二进制01010100,八进制 65 ,十六进制 37 ,8421BCD码01010101
C.
二进制110111 ,八进制 64 ,十六进制 F5 ,8421BCD码110110
D.
二进制111110 ,八进制 63 ,十六进制 3E ,8421BCD码111110
【单选题】Highly motivated, ambitious people often __________ more hours in a day. A. needing B. need C. needed D. are needing
【简答题】adj. needing a lot of skill, patience, effort, etc; expecting a lot of work or attention from others; not easily satisfied
【单选题】The sheets for your bed washing.
【简答题】8位2进制数00011001,转换为十进制为(),转换为16进制为()。
【简答题】What three ways were introduced as celebrations of the New Year in the USA?