我的梦想
上善若水,水善利万物而不争,处众人之所恶,故几于道。
渗透现象和渗透压 渗透现象和渗透压
理想模型理想半透膜:只允许溶剂分子通过,与细胞膜相类似。 渗透现象从宏观上看,水分子从溶纯剂侧向溶液侧转移。 从微观上看,水分子既从纯溶剂侧向溶液侧转移,也从溶液侧向纯溶剂侧转移,但是前者的幅度大于后者。 一段时间后,溶液侧液面上升,纯溶剂
2025-10-15
基础化学习题(部分)-绪论 基础化学习题(部分)-绪论
判断题 $1 \mathrm{mol}$ 硫酸的质量是 $98 \mathrm{g}$。(错) 未指明基本单元,硫酸可以指 $\mathrm{H_2SO_4}$,也可以指 $2 \mathrm{H_2SO_4}$,甚至可以指 $\frac
2025-10-03
NCE3-8 A famous monastery NCE3-8 A famous monastery
课文阅读A famous monastery 著名的修道院 monatery n. a building in which MONKS live together 隐修院;修道院;寺院 The Great St. Bernard Pas
2025-07-15
NCE3-7 Mutilated Ladies NCE3-7 Mutilated Ladies
课文阅读Mutilated Ladies 残钞鉴别组 mutilate v. to damage sb’s body very severely, especially by cutting or tearing off part of
2025-07-13
NCE3-6 Smash-and-grab NCE3-6 Smash-and-grab
课文阅读Smash-and-grab 砸橱窗抢劫 smash v. to break sth, or to be broken, violently and noisily into many pieces (哗啦一声)打碎,打破,破碎
2025-07-12
NCE3-5 The facts NCE3-5 The facts
课文阅读The facts 确切数字 Editors of newspapers and magazines often go to extremes to provide their readers with unimportant fa
2025-07-11
NCE3-4 The double life of Alfred Bloggs NCE3-4 The double life of Alfred Bloggs
课文阅读The double life of Alfred Bloggs 艾尔弗雷德·布洛格斯的双重生活 double adj. combining two things or qualities 双重的 [usually before
2025-07-11
NCE3-3 An unknown goddess NCE3-3 An unknown goddess
课文阅读An unknown goddess 无名女神 goddess n. a female god 女神 Some time ago, an interesting discovery was made by archaeologi
2025-07-10
NCE4-1 Finding fossil man NCE4-1 Finding fossil man
课文阅读Finding fossil man 发现化石人 fossil man 化石人 We can read of things that happened 5000 years ago in the Near East, where
2025-07-10
NCE3-2 Thirteen equals one NCE3-2 Thirteen equals one
课文阅读Thirteen equals one 十三等于一 Our vicar is always raising money for one cause or another, but he has never managed to ge
2025-07-09
NCE3-1 A puma at large NCE3-1 A puma at large
课文阅读A puma at large 逃遁的美洲狮 puma n. a large American wild animal of the cat family, with yellow-brown or grey fur 美洲狮 at
2025-07-09
CF2103B Binery Typewriter CF2103B Binery Typewriter
一定会按下 $n$ 次键来打出 $n$ 个字符,所以减少操作步数的唯一路径是减少移动的步数,也就是让 0 和 1 尽量地连续。 注意到,只进行 $1$ 次反转操作最多只可能让移动的步数减少 $2$。故而,若整个序列 0 和 1 已经足够连续
2025-07-03
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