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【单选题】
玻璃电极膜电位的产生是由于A.
离子透过玻璃膜
B.
电子的得失
C.
离子得到电子
D.
溶液中H+和湿玻璃层中的离子发生交换
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【简答题】两条火车轨道除了在隧道内的一段外都是平行铺设的。由于隧道的宽度不足以铺设双轨,因此,在隧道内只能铺设单轨。一天下午,一列火车从某一方向驶入隧道,另一列火车从相反方向驶入隧道。两列火车都以最高的速度行驶,然而,它们并未相撞。这是为什么?
【单选题】MEMO To: Peter From: Tom The publicity leaflets for the new model will not be book from the printers until Friday 11 July.
A.
We might have the leaflets before 11 July.
B.
We won't have the leaflets before 11 July.
C.
We are sure to have the leaflets before 11 July.
【简答题】类的封装是指在定义一个类时,将类中的属性私有化,即使用【 】关键字来修饰。
【多选题】关于工程方案研究内容的说法，正确的有( )。
A.
研究线路走向是铁路项目独有的特点
B.
露天开采应提出油气集输等工程方案
C.
矿产开采项目的工程方案主要研究开拓方式
D.
研究提出路基填挖高度是交通项目的重要内容
E.
一般工业项目的工程方案是指建筑物的结构形式
【简答题】介绍信的一般结构是由 、 、 、 、 等五部分组成。
【简答题】Cheating on exams is popular in colleges and statistics show that it has risen dramatically during the past score years. Students don’t feel ashamed to cheat on exams. Most of them don’t care about ch...
【单选题】In the United States, there's a widespread belief that statistics don't lie. Perhaps that's why surveys are such an important part of American life. For many years, politicians, businesspeople, and sc...
A.
the census gives an accurate count of the number of people in the United States
B.
the United States government has taken a census every ten years
C.
the census gives a lot of information about population and changes in American life and society
D.
according to the latest census, the average American is happier than ever before
【简答题】介绍信由( )、( )、( )构成。
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