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【多选题】
(Multiple Choices) How did Haier’s mini refrigerators hit the college student market in the US?
A.
A. It focused on its market segmentation.
B.
B.It had the innovation advantages
C.
C.It won the trust of its consumers.
D.
D.It adopted the differentiation strategy.
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参考答案：
参考解析：
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举一反三
【单选题】The standard input file for the system refers to_____.
A.
mouse
B.
keyboard
C.
monitor
D.
harddisk
【单选题】If an error occurs when the fopen function is executed, the return value of the function is______.
A.
Address value
B.
NULL
C.
ERROR
D.
EOF
【单选题】In C, function that store integers in binary form are_____.
A.
fprintf()
B.
fread()
C.
fwrite()
D.
fputc()