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【判断题】
边长在150cm以上的洞口，四周设防护栏杆，洞口下安全平面网。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】二维条码与一维条码相比的优先有哪些?
【简答题】常用的Internet接入方式主要有ADSL、( )和无线接入。
【单选题】As for food, experts suggest that ______.
A.
We should eat less
B.
We should never eat meat
C.
We should have meals with less salt and sugar
D.
We shouht have meals without salt or sugar
【单选题】Since we have never been here before, we do not know which bus ______.
A.
should we take
B.
to be taking
C.
to take
D.
should take
【单选题】As for food, experts suggest that ______.
A.
We should eat less
B.
We should never eat meat
C.
We should have meals with less salt and sugar
D.
We should have meals without salt or sugar
【简答题】简述RFID与一维条码、二维码相比的优势。
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