下列关于计算机浮点数的叙述中，错误的是A．浮点数由指数和尾数(含符号位)组成 B．在

衰老患者护理的重点为（）。

A.治愈疾病

B.消除功能障碍和残疾

C.保持和恢复生活能力

D.使之适应其生活环境

E.提高独立生活质量

为了研究物体的运动状态与受力情况之间的关系，用钩码（重1牛）、测力计、打点计时器和纸带等进行实验。试验中，先将钩码挂在已调好的测力计下，且处于静止状态，如图（a）所示。接着，在钩码的下端固定纸带，并使纸带穿过打点计时器，然后分别三次拉动钩码竖直向上运动，每次拉动过程中，观察到一段时间内测力计示数是不变的，纸带上的点记录了这段时间内钩码的运动情况，三次实验如图（b）、（c）、（d）所示。请仔细观察图中的测力计示数和对应的纸带，归纳得出初步结论。

（1）由图（a）与（b）与（c）可得                                                            。

（2）由图（a）与（d）或(b)与（d）或（c）与（d）可得                                                    。

先进的（）要求职工具有较高的文化和技术素质，掌握较高的职业技能。

A、管理思路

B、技术装备

C、经营理念

D、机构体系

语法填空

     One day a rich man took his son on a trip to the country. He wanted to show his son how the poor

lived so he could be thankful __1_ his wealth.

     They spent a couple of days and nights on the farm of   2   would be considered a very poor family.

     On their return the father asked his son   3   (explain) what he had learnt. The boy, who had remained

silent and deep in thought on the journey home,   4  (reply) in a way that shocked his father.

      The boy said he wanted to become a farmer. He envied the farmers who had the beautiful night stars

to give them light   5   his family had only expensive lanterns. His wish was to have a farm    6   he could

go swimming in an endless river instead of the garden pool in their home. Finally he asked his father, "

What makes us safer, large walls around our house   7   friends that will protect us?"

      The boy finished by saying, "   8    the trip I thought we were rich, but today I learnt who is  9  (true)

rich." With this the boy got up and walked away, leaving his father sitting on their comfortable sofa, totally   10    (speech)．

某企业只生产和销售甲产品，其总成本习性模型为y=15000+4x。假定该企业2005年度该产品销售量为10000件，每件售价为8元，按市场预测2006年A产品的销售数量将增长15%。

假定企业2005年发生负债利息及融资租赁租金共计5000元，优先股股息300元，企业所得税税率40％，计算2006年的复合杠杆系数。