皮皮学，免费搜题
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【单选题】
细胞核内的液体称核液,下列关于细胞核的结构与功能的叙述,正确的是( )
A.
核液内仅含有由DNA和蛋白质两种物质构成的染色质
B.
核膜具有选择透过性,而核不具有选择透过性
C.
核糖体的合成都与核仁有关
D.
细胞核是遗传和代谢的控制中心,但不是细胞的代谢中心
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【单选题】Only when __________________ permission _______________ allowed to enter the lab.
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B.
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持有信用卡,可在任何消费场所内进行消费和购物
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【单选题】Every classroom has a teacher's desk ______ the classroom. It's for the teacher. [     ]
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beside
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in the front of
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【判断题】除非法律另有规定,拟交付给被许可方的拷贝灭失的风险,包括以电子方式交付的拷贝,于电子信息交易合同成立时转移给被许可方
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【单选题】Only when __________________ permission _______________ allowed to enter the lab.
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B.
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任何机构都可向社会发行信用卡
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持有信用卡,可在任何消费场所内进行消费和购物
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查看完整题目与答案