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【单选题】
3-11 (2) How to make a positive impression in online dating? Choose the one which is not correct. A.Be honest with survey questions. B.Keep the conversation light and fun. C.You should dress nice, have your hair just right, and smell great. D.Your profile provides the right type of information.A.
B.
C.
D.
D
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A.
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B.
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【简答题】罗紫.哥特里法测定奶粉脂肪含量时,加入氨水、乙醇、乙醚及石油醚的作用分别是什么?
【单选题】When some operations can not be realized through the menu easily, at this time it is more convenient to use the ______.
A.
touch screen
B.
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C.
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D.
numeric keypad