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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Thanks to the GPS, the apps on your phone have long been able to determine your general location. But what if they could do so with enough precision that a supermarket, say, could tempt you with digit...
A.
rewards programs
B.
physical stores
C.
profitable insight
D.
shopping habits
【单选题】设两个8位补码表示的数b7 b6 b5 b4 b3 b2 b1 b0和a7 a6 a5 a4 a3 a2 a1 a0相加时溢出(b7、a7为符号标志)，则( )。
A.
b7与a7的“逻辑或”结果一定为1
B.
b7与a7的“逻辑与”结果一定为0
C.
b7与a7的“逻辑异或”结果一定为1
D.
b7与a7的“逻辑异或”结果一定为0