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【单选题】
以 NaOH 滴定H3PO4(Ka1=7.5×10-3,Ka2=6.2×10-8,Ka3=5.0×10-13)至生成Na2HPO4 时,A.
的 pH 应当是（ ）。
B.
4.33
C.
12.3
D.
9.75
E.
7.21
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【简答题】根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 Many people find it hard to make friends. 小题1: All it takes is for you to get out of your shell and remember that if you love yourself, others will too. Espec...
【简答题】单词拼写, 根据中文或首字母完成句子，每空一词, 在答题纸上写出完全形式。（10分） 小题1:Nothing is impossible if you put your h________ into it. 小题2:There is a strange s________ in the house .Perhaps something goes bad 小题3: ________（错误...
【单选题】急性腹膜炎的患者腹部检查的腹膜炎三联征是
A.
腹式呼吸减弱,腹肌紧张和压痛
B.
腹式呼吸增强,腹肌紧张和压痛
C.
腹肌紧张、压痛和反跳痛
D.
腹部膨胀、腹肌紧张和反跳痛
E.
肝浊音上界消失,腹肌紧张和压痛
【简答题】单词拼写10% 小题1:I called you last night but you didn’t answer me. What was h__________. 小题2:I looked for my cat e_________, but I didn’t find it. 小题3:He is good at math, but he failed the exam this time. ...
【简答题】Can plants eat people? Probably not, but there are many plants that eat meat. Some of them are big, and they can eat small animals. One famous meat-eating plant is the Venus flytrap(捕蝇草). The Venus fl...
【单选题】(13 题共用题干)9个月患儿,单纯母乳喂养,未添加辅食, 4~5 个月时会笑、能认识母亲。近 2 个月来面色蜡黄,反应迟钝,少哭不笑。体检发现肢体有轻微震颤,考虑为营养性巨幼红细胞性贫血。该患儿的病因是缺乏
A.
铁和维生素 C
B.
维生素 BI2和叶酸
C.
维生素D
D.
.维生素 E
E.
维生素 K
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