简述教育管理学产生的标志及原因。

能正确表示下列反应的离子方程式是（   ）                       

A．甲酸钠溶液和盐酸反应：HCOO^-+H⁺HCOO

B．硫化钠的第一步水解：S^2-+2H₂OH₂S+2OH^-

C．醋酸钡溶液和硫酸反应：Ba²⁺+SOBaSO₄↓

D．氢氧化钙溶液和碳酸氢镁反应：Ca²⁺+OH^-+HCO₃^-CaCO₃↓+H₂O

A公司委托某物流公司管理存货，已知A公司全年需用C产品2400吨，每次订货成本为400元，每吨产品年储备成本12元，则每年最佳订货批数为（）

A．14次

B．5次

C．3次

D．6次

男性，45岁，大便时突然剧烈头痛、恶心呕吐，为胃内容物，既往曾有一过性的右侧上睑下垂病史，急诊来院。

为尽快明确诊断及鉴别诊断，询问病史时应注意（）

A.头痛的部位

B.有无高血压、动脉硬化史

C.家人有无类似发作

D.有无慢性颅内压增高，如头痛、呕吐及视力减退史

E.有无全身慢性感染病灶

读写任务

阅读下面的短文,  然后按照要求写一篇150词左右的英语短文。

     Diligence is the key to success, which means persisting in one's work.The true meaning of diligence is

to use time carefully for the purpose of improvement, or to work persistently without wasting time.

     Laziness makes us useless.If we do not study and work hard we shall not be able to earn a living in

our community.There will be nothing we can do just because we have failed to learn anything by letting

the time pass unused.The life of a lazy man is of no use to himself and to others.The man who is too lazy

to work is the man who's generally most ready to beg or to steal.Everyone when he is young should learn

some useful work.

     There is no better help to diligence than the habit of early rising, which just like all other good habits

ismost easily formed in youth.An English proverb says, “Lost time is never found again.” This means

that everybody must be diligent, and make good use of his time.Time is precious and is one of those many

things that cannot be purchased with money.One must study hard when he is young so that he may make

great progress, succeed in life and become useful to his country.

Lazy hands make a man poor, while diligent hands bring wealth.Therefore, we can say that diligence is

the mother of success.

[写作内容]

1.  以约30词概括上文的主要内容；

2.  以约120词写一篇记叙文,  描写你或你的朋友因懒惰而失败的一次经历,  内容包括：

(1)举例说明勤奋使人成功,  懒惰使人失败；

(2)以你或你的朋友的一次经历说明懒惰会令人失败。

[写作要求]

1.  作文中可以使用亲身经历或虚构的故事,  也可以参照阅读材料的内容,  但不得直接引用原文中的句子；

2.  作文中不能出现真实姓名和学校名称。

[评分标准]

概括准确,  语言规范,  内容合适,  语篇连贯。

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1号发电机转子绕组温度温度要求小于（）。

A.＜120℃；

B.＜110℃；

C.＜90℃；

D.＜85℃。