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问题
多项选择题
下列哪些同城交换业务可以由中心直接在核心系统中处理（）。
A.提入借方
B.提入贷方
C.提入借方退票
D.提出借方退票
答案
参考答案：A, B, C, D
选择题
When I asked her what she did yesterday, she pretended ___ about it.
A. not to hear
B. not having heard
C. to not have heard
D. not to have heard
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名词解释
化学定时炸弹
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