单选题:人类要提高核能利用的效率和安全性,做到趋利避害,最基本的要求是( )。

题目内容:
人类要提高核能利用的效率和安全性,做到趋利避害,最基本的要求是( )。 A.一切从实际出发。实事求是
B.充分发挥主观能动性
C.在实践中利用和改造规律
D.不断改造主观世界

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某二叉树结构如图6所示,其后序遍历的结果是( )

某二叉树结构如图6所示,其后序遍历的结果是( ) A.ABDFGCEH B.FDGBAEHC C.FCDBHECA D.HECAGFDB

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We check everything twice ______________ be sure of quality.

We check everything twice ______________ be sure of quality.

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(共用题干)2 个月婴儿,体重 4kg,母亲因黄疸型肝炎不能哺乳,需改用人工喂养。最适合的乳制品是

(共用题干)2 个月婴儿,体重 4kg,母亲因黄疸型肝炎不能哺乳,需改用人工喂养。最适合的乳制品是A.全脂奶粉 B.酸奶 C.蒸发奶 D.婴儿配方奶粉 E.

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Reading- Read the text and decide whether the statement is r

Reading- Read the text and decide whether the statement is right, wrong or doesn

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Which department works out the company's costs and its profi

Which department works out the company's costs and its profits?

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