北京市一家乡镇企业在当地收购蘑菇58吨,根据市场信息,将蘑菇直接销售,每吨可获利

题型:解答题

问题:

北京市一家乡镇企业在当地收购蘑菇58吨,根据市场信息,将蘑菇直接销售,每吨可获利

100元;如果对蘑菇进行粗加工,每天可加工8吨,每吨可获利800元;如果对蘑菇进行精加工,每天可加工1吨,每吨可获利4000元.由于受条件限制,每天只能采用一种方式加工,要求在一月内(30天)将这批蘑菇全部销售,为此该企业厂长召开职工大会,让职工讨论如何加工销售更合算?

甲说:将蘑菇全部进行粗加工后销售;

乙说:30天都进行精加工,未加工的蘑菇直接销售;

丙说:30天中可用几天粗加工,再用几天精加工后销售.

请问厂长应采用哪位说的方案做,获利最大?并说明理由.

考点:一元一次方程的应用
题型:解答题

Part 3


Questions 19-25


·Read the following passage and answer questions 19-25.
·For questions 19-25, choose the correct answer from A, B, C and D.
·Mark your answer on the Answer Sheet.
The number of speakers of English in Shakespeare’s time is estimated to have been about five million. Today it is estimated that some 260 million people speak it as a native language. Mainly in the United States, Canada, Great Brittany, Ireland, South African, Australia and New Zealand. In addition to the varieties of English found in these areas, there are great many regional and social varieties of the language, as well as various levels of usage that are employed both in its spoken and written forms.
It is virtually possible to estimate the number of people in the world who acquired adequate work knowledge of English in addition to their own languages. The purpose for which English is learned and the situation in which such learning takes place are so varied that it is difficult to define and still more difficult to assess what constitutes an adequate working knowledge for each situation.
The main reason for the widespread demand for English is its present-day importance as a world language. Besides serving the infinite needs of its native speakers, English is a language in which some of the most important works in science, technology, and other fields are produced and not always by native speakers. It is widely used for such purpose as meteorological and airport communications, international conferences, and the spread information over the radio and television networks of many nations for the number of developing countries, especially former British colonies. Many of these countries have multi-lingual populations and need a language for internal communication as well as for international communication and for access to the scientific and technological development in the west.

An appropriate title for this passage would be ______.

A.English as a World Language

B.International Communications

C.The Difficulty of Learning English

D.The Standard Variety of English

题型:解答题
计算:
(1)2(a43+(a32-(a23+a2a10
(2)(
1
10
)-2+10-2×104×100

(3)4x(x-1)2+x(2x+5)(5-2x);
(4)(a+3b-2c)(a-3b-2c).
题型:解答题

下列哪项不是胎盘部位滋养细胞肿瘤的预后因素:

A.先行妊娠是否是足月妊娠

B.先行妊娠至临床诊断间隔时间

C.子宫增大的程度

D.临床分期

E.核分裂率

题型:解答题

患者,女,29岁,近3个月来刷牙、咀嚼硬物时牙龈易出血,牙龈长一肿物2个月,并慢慢长大,影响进食。检查:多数牙龈缘及龈 * * 鲜红色,松软发亮,下切牙唇侧有一瘤状增生物。确诊前最应询问的病史为()

A.刷牙史

B.牙签剔牙史

C.食物嵌塞史

D.服消炎药史

E.妊娠史

题型:解答题

病历摘要:浸润型肺结核患者,男性,45岁。曾有肺结核病史。咳嗽,发热,胸痛5天入院。查体.双肺呼吸音粗,可闻及散在湿啰音。心脏听诊无异常。行胸部正位片检查。

3、鉴别诊断有哪些?

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