制作人的口腔上皮细胞临时装片时，要将标本放于生理盐水中，目的是（）。 A.防止标本干

滨海水产加工厂原是一家大型国有企业，2010年内，发生了以下事项：
1．调整新的领导班子上任，决定精简内设机构，将会计部撤并到厂部办公室，同时任命办公室主任吴某兼任会计负责人。撤并以后，会计主要工作重新分工如下：原会计部主办会计继续留任会计工作，吴某的女儿王某调任出纳工作，兼任会计档案的保管。吴某自从参加工作以来一直从事办公室文秘。为了使其尽快胜任会计负责人岗位，领导要求吴某半脱产参加会计知识培训班，并参加当年全市会计从业资格的统一考试。
2．办理会计交接手续，由厂部纪检、监察部门严格监交。
3．某司法单位因工作需要暂时借用滨海水产加工厂上一年的会计档案，对有关原始凭证做了摘录或复制。吴某积极配合，并办理了详细的外借登记手续。
要求：根据资料，回答以下各题：

下列说法错误的是( )。

A．王某可以兼任会计档案保管

B．企业会计档案可以外借、查阅

C．可以任命吴某为会计主管人员

D．王某不可以兼任会计档案保管

某课外活动小组用如图装置进行实验，试回答下列问题。

(1)若开始时开关K与a连接，则B极的电极反应式为________________。

(2)若开始时开关K与b连接，则B 极的电极反应式为____________________，总反应的离子方程式为

___________________有关上述实验，下列说法正确的是（填序号）__________。

①溶液中Na⁺向A极移动

②从A极处逸出的气体能使湿润的KI淀粉试纸变蓝

③反应一段时间后加适量盐酸可恢复到电解前电解质的浓度

④若标准状况下B极产生2. 24 L气体，则溶液中转移0.2 mol电子

(3)该小组同学认为，如果模拟工业上离子交换膜法制烧碱的方法，那么可以设想用如图装置电解硫酸钾 溶液来制取氢气、氧气、硫酸和氢氧化钾。

①该电解槽的阳极反应式为_________________。此时通过阴离子交换膜的离子数_____（填“大于”、“小于”或“等于”）通过阳离子交换膜的离子数。

②制得的氢氧化钾溶液从出口（填写“A”、“B”、 “C”或“D”）____导出。

③通电开始后，阴极附近溶液pH会增大，请简述原因_______________________。

④若将制得的氢气、氧气和氢氧化钾溶液组合为氢氧燃料电池，则电池正极的电极反应式为________。

（10）阅读材料，回答问题：

徐州煤铁矿的近代连续开采始于清末。1881年(清光绪七年)9月，两江总督左宗棠上书清廷，为“筹备海防，制造枪炮及各省机器轮船，所需煤铁最为大宗，请开办江苏利国煤铁。”此奏获准立案后，左宗棠即命徐州道程敬之“查勘确定，遴员举办。”……经徐州道府和左宗棠批准后，于l882年10月5日(清光绪八年八月二十四日)正式成立组建“徐州利国驿煤铁矿务总局”，“官督商办，煤铁并举。

请回答：

(1)左宗棠作为洋务派的重要代表人物，他创办的军事工业是什么?目的何在?（2分）

(2)材料中‘徐州利国驿煤铁矿务总局”创办的目的是什么?(2分)

(3)洋务运动是中国近代化的开端。它的历史作用主要是什么?(2分)

Drinking a lot of water does not do any good to the body, according to two experts in the United States. In fact, they warn, drinking too much water could be, in certain cases, harmful.

In a study, Dr Stanly Goldfarb and Dr Dan Negoianu, both of the Renal, Electrolyte and Hypertension Division at the University of Pensylvania, the United States, have denied the popular belief that drinking a lot of water clears body toxins（毒素）better, improves skin, and helps reduce weight.

Dr Goldfarb and Dr Negoianu say that they found little proof to back the public opinion that drinking 8 glasses of water every day benefits health. At the same time, they fond little proof of harm in drinking 8 glasses of water every day.

It is widely believed that in some cases-such as athletes, people who live in hot, dry environments, and those with certain medical conditions-drinking a lot of water indeed helps, but no studies have been done to prove the benefits of this practice in average, healthy people, the website medheadlines.com reports.

The study at the University of Pennsylvania also examined reports that some people experienced increased headaches when their consumption（消耗）of water was low. In one small study, which the doctors reviewed, the group drinking the most water reported fewer headaches than the control group, “but the difference in the number of headaches was o small between the two groups as to be considered unimportant.”

The researchers concluded that there is no scientific proof to support that average, healthy people need to drink at least 8 glasses of water each each day.

The website medheadines.com says that, according to an Indian doctor, drinking too much water is harmful. If water enters the body more quickly than it can be removed, problems can occur.

小题1:What’s the key message delivered in the passage?

A．Drinking too much water might bring harm.

B．Whether to drink enough water makes no difference.

C．Drinking too much water may cause headaches.

D．Average, healthy people should drink more water.小题2:We can learn from the passage that 8 glasses of water every day_______ .

A．proves good for the body

B．has scientific proof of harm

C．is sure to reduce headaches

D．is generally considered necessary小题3:Who may agree that drinking lots of water helps to lose weight?

A．The two experts.

B．The Indian doctor.

C．The general public.

D．The website.小题4:According to the passage, we know that_______.

A．the website medheadlnes.com is developed by an Indian doctor

B．the study was carried out by two experts with an Indian doctor

C．the two experts performed the study at the University of Pennsylvania

D．drinking 8 glasses of water every day can cure certain diseases

非归零码（NRZ）适于在长距离有线线路中传输。