绞车刹车装置分为（）刹车和气动刹车两部分，要保证机械部件灵活好用。A、电动 B、自动

我们自从有了用字母表示数，发现表达有关的数和数量关系更加的简洁明了，从而更助于我们发现更多有趣的结论，请你按要求试一试：

（1）用代数式表示：①a与b的差的平方；②a与b的平方和与a，b两数积的2倍的差．

（2）当a=3，b=-2时，求第（1）题中①②所列的代数式的值．

（3）由第（2）题的结果，你发现了什么等式？

某施工单位承包了一外资工程，报价中现场管理费率为10%，企业管理费牢为8%，利润率为5%；A、B两分项工程的综合单价分别为80元/m²和460元/m³。
该工程施工合同规定：合同工期1年，预付款为合同价的10%，开工前1个月支付，基础工程(工期为3个月)款结清时扣回30%，以后每月扣回10%，扣完为止；每月工程款于下月5日前提交结算报告，经工程师审核后于第3个月末支付；若累计实际工程量比计划工程量增加超过15%，支付时不计企业管理费和利润；若累计实际工程量比计划工程量减少超过15%，单价调整系数为1.176。
施工单位各月的计划工作量如表6.1所示：

A、B两分项工程均按计划工期完成，相应的每月计划工程量和实际工程量如表6.2所示：

问题：1.该施工单位报价中的综合费率为多少
2．该工程的预付款为多少
3．画出该工程资金使用计划的现金流量图(不考虑保留金的扣除)。
4．A分项工程每月结算工程款各为多少
5．B分项工程的单价调整系数为多少每月结算工程款各为多少

男性，35岁，中度哮喘患者，就诊时下述指标中对于判断哮喘严重程度更为准确的是（）

A.心率加快（110次／分）

B.房性早搏（2次／分）

C.血压升高（148/90mmHg）

D.奇脉（10～25mmHg）

E.房室传导阻滞

导致利益冲突的原因可以包括（）

A.经济利益

B.以往过节

C.价值冲突

D.非经济利益

In America there are no nobles or men of letters, and the common folk mistrust the wealthy. Consequently, (1) form the highest political class, and the most cultivated circle of society. They have therefore (2) by innovation, which adds a conservative interest to their natural taste for (3) . If I were asked where I place the American aristocracy, I should reply (4) that it is not composed of the rich, who are united together by (5) , but that it occupies the judicial bench and the bar.
When I started researching this topic, I found an interesting (6) Legal Reform Now. As the name suggests, this web site is devoted to (7) , and it is definitely concerned about the dominance of lawyers in (8) . There I read an article by a (9) from the University of Wisconsin. One observation the UW article (10) is that the legal profession is the dominant profession of the people (11) to public office. For example, about half our representatives and (12) of our senators are lawyers. No other profession (13) having the same number of people in political office.
Effectively, lawyers form our nation’s (14) organized political constituency in America. Lawyers (15) and lawyers interpret our laws. When judges are appointed, the American Bar Association is the only (16) that is consulted to rate the fitness of potential judicial appointees.
Our nation has been in existence for (17) and lawyers have been this nation’s aristocracy since its (18) . Our system works, but do we really want to have a single profession (19) our nation. Specifically, do we want to have the legal profession in charge (20) , that is something to think about.

In America there are no nobles or men of letters, and the common folk mistrust the wealthy. Consequently, (1) form the highest political class, and the most cultivated circle of society. They have therefore (2) by innovation, which adds a conservative interest to their natural taste for (3) . If I were asked where I place the American aristocracy, I should reply (4) that it is not composed of the rich, who are united together by (5) , but that it occupies the judicial bench and the bar.
When I started researching this topic, I found an interesting (6) Legal Reform Now. As the name suggests, this web site is devoted to (7) , and it is definitely concerned about the dominance of lawyers in (8) . There I read an article by a (9) from the University of Wisconsin. One observation the UW article (10) is that the legal profession is the dominant profession of the people (11) to public office. For example, about half our representatives and (12) of our senators are lawyers. No other profession (13) having the same number of people in political office.
Effectively, lawyers form our nation’s (14) organized political constituency in America. Lawyers (15) and lawyers interpret our laws. When judges are appointed, the American Bar Association is the only (16) that is consulted to rate the fitness of potential judicial appointees.
Our nation has been in existence for (17) and lawyers have been this nation’s aristocracy since its (18) . Our system works, but do we really want to have a single profession (19) our nation. Specifically, do we want to have the legal profession in charge (20) , that is something to think about.