皮皮学，免费搜题
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【单选题】
下列商品属于我国禁止进口的是
A.
虎骨
B.
木材
C.
木炭
D.
钢材
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】A user has discovered that even though they are using the latest version of the anti-virus software,the computer is still being infected by a virus. Which of the following is the BEST solution for thi...
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B.
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C.
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many
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【判断题】Once you connect your computer to the Internet , it is likely to contract a virus even though you haven’t download anything.
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