如图所示是一种水位自动报警器的原理示意图,当水位达到金属块A时,出现的情况是

题型:选择题

问题:

如图所示是一种水位自动报警器的原理示意图,当水位达到金属块A时,出现的情况是

A.红灯亮

B.绿灯亮

C.红、绿灯同时亮

D.红、绿灯都不亮

考点:扬声器电磁继电器
题型:选择题

Education is one of the key words of our time. A man, without an education, many of us believe, is an unfortunate victim of unfortunate circumstances deprived of one of the greatest twentieth-century opportunities. Convinced of the importance of education, modern states "invest" in institutions of learning to get back "interest" in the form of a large group of enlightened young men and women who are potential leaders. Education, with its cycles of instruction so carefully worked out, is punctuated by textbooks--those purchasable wells of wisdom what would civilization be like without its benefits

So much is certain: that we would have doctors and preachers, lawyers and defendants, marriages and births; but our spiritual outlook would be different. We would lay less stress on "facts and figures" and more on a good memory, on applied psychology, and on the capacity of a man to get along with his fellow-citizens. If our educational system were fashioned after its bookless past we would have the most democratic form of "college" imaginable. Among the people whom we like to call savages all knowledge inherited by tradition is shared by all; it is taught to every member of the tribe so that in this respect everybody is equally equipped for life.

It is the ideal condition of the "equal start" which only our most progressive forms of modern education try to reach again. In primitive cultures the obligation to seek and to receive the traditional instruction is binding on all. There are no "illiterates"--if the term can be applied to peoples without a script--while our own compulsory school attendance became law in Germany in 1642, in France in 1806, and in England in 1976, and is still non-existent in a number of "civilized" nations. This shows how long it was before we considered it necessary to make sure that all our children could share in the knowledge accumulated by the "happy few" during the past centuries. Education in the wilderness is not a matter of monetary means. All are entitled to an equal start. There is none of the hurry that, in our society, often hampers the fui1 development of a growing personality. There, a child grows up under the ever-present attention of his parents; therefore the jungles and the savages know of no "juvenile delinquency". No necessity of making a living away from home results in neglect of children, and no father is confronted with his inability to ’"buy" an education for his child.

It can be inferred from the text that()

A. some families now can hardly afford to send their children to school

B. everyone today has an equal opportunity in education

C. every country invests heavily in education

D. we are not very certain whether preachers are necessary or not

题型:选择题

眼眶柯氏位投照角度为()

A.后前23°位

B.后前37°位

C.后前25°位

D.后前60°位

E.前后37°位

题型:选择题

病历摘要:患者女性,37岁。大便时突起炸裂样头痛3小时,伴喷射样呕吐。既往体健。体检:T37.5℃,BP145/90mmHg,R20次/分,P85次/分。神志清楚,颅神经检查无异常,颈强直,克、布氏征(-),四肢肌力、肌张力正常,病理征(-)。

应首先采取哪些处理措施?提示:CT示右额叶直回处小血肿、蛛网膜下腔出血。()

A.绝对卧床

B.镇静、镇痛

C.维持血压稳定

D.预防抽搐

E.腰穿

F.应用尼莫地平

题型:选择题

一级动火工作票由申请动火部门(车间、分公司、工区)的动火工作票签发人签发,本部门(车间、分公司、工区)安监人员、消防人员审核,本部门(车间、分公司、工区)分管生产的领导或技术负责人(总工程师)批准,必要时还应报当地地方公安消防部门批准。

题型:选择题

人体内嘌呤核苷酸分解代谢主要终产物是()

A.尿素

B.尿酸

C.肌酸

D.肌酐

E.尿苷酸

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