下列关于红掌特征的描述错误的是（）。A、佛焰苞宽心脏形 B、佛焰苞为主要观赏部位 C

某工程项目，业主通过招标与甲建筑公司签订了土建工程施工合同，包括A、B、C、 D、E、F、G、H八项工作，合同工期360天。业主与乙安装公司签订了设备安装施工合同，包括设备安装与调试工作，合同工期180天。通过相互协调，编制了如图3-1所示的网络进度计划。

图3-1 网络进度计划(单位：天)

该工程施工过程中发生了以下事件。

事件1：基础工程施工时，业主负责供应的钢筋混凝土预制桩供应不及时，使工作A延误7天。

事件2：B工作施工后进行检查验收时，发现一预埋件埋置位置有误，经核查，是由于设计图纸中预埋件位置标注错误所致。甲建筑公司进行了返工处理，损失5万元，且使工作B延误 15天。

事件3：甲建筑公司因人员与机械调配问题造成工作C增加工作时间5天，窝工损失2万元。

事件4：乙安装公司进行设备安装时，因接线错误造成设备损坏，使乙安装公司安装调试工作延误5天，损失12万元。

发生以上事件后，施工单位均及时向业主提出了索赔要求。

问题 1．施工单位对以上各事件提出索赔要求，分析业主是否应给予甲建筑公司和乙安装公司工期和费用补偿。

2．如果合同中约定，由于业主原因造成延期开工或工期延期，每延期一天补偿施工单位 6000元，由于施工单位原因造成延期开工或工期延误，每延误一天罚款6000元。计算施工单位应得的工期与费用补偿各是多少

3．该项目采用预制钢筋混凝土桩基础，共有800根桩，桩长9m。合同规定：桩基分项工程的综合单价为180元/m；预制桩由业主购买供应，每根桩按950元计。计算甲建筑公司桩基础施工应得的工程款是多少 (注：计算结果保留一位小数)

已知函数f（x）=ax³+bx²+cx在x=±1处取得极值，且在x=0处的切线的斜率为-3，

（Ⅰ）求f（x）的解析式；

（Ⅱ）若过点A（2，m）可作曲线y=f（x）的三条切线，求实数m的取值范围。

站立训练适应证是（）

A.下肢骨折未愈合者，骨骼运动系统的病变或损伤影响行走功能的患者

B.站立平衡功能障碍者，中枢神经系统损伤后影响行走功能的患者

C.各种原因所致的关节不稳

D.站立平衡功能障碍者，骨骼运动系统的病变或损伤影响行走功能的患者

E.中枢神经系统损伤后、骨骼运动系统的病变或损伤影响行走功能的患者

Mark was walking home from school one day when he noticed a boy ahead of him. He had tripped (绊倒) and dropped all of the books he was carrying, along with some clothes, a baseball bat and a glove.

Mark knelt (跪) down and helped the boy pick up the things. Since they were going the same way, he offered to carry some things for the boy.

As they walked, Mark discovered the boy’s name was Bill. He loved video games, baseball and history, but he was having trouble with some of his subjects.

They arrived at Bill’s home first. Mark was invited in for a Coke and to watch some television. The afternoon passed pleasantly with some laughs and talk. Then Mark went home.

They continued to see each other around school, had lunch together once or twice, then both graduated from junior school.

Three days before graduation, Bill asked Mark if they could talk.

Bill reminded (提醒) Mark of the day years ago when they had first met. “Did you ever wonder why I was carrying so many things home that day?” asked Bill.

“You see, I took away all my things from school. I had stored away some of my mother’s sleeping pills (安眠药). I was going home to kill myself. But after we spent some time talking and laughing, I realized that if I had died, I would have missed so many good times. So you see, Mark, when you picked up those books that day, you did a lot more._____________________”

小题1:When Bill fell down on his way home, Mark ________.

A．didn’t notice that

B．went away quickly

C．carried all the things for him

D．helped him pick up the things小题2:Which of the following is NOT true?

A．Mark was a warm-hearted boy.

B．Bill and Mark were in the same school.

C．Bill was good at all of his subjects.

D．Bill loved video games, baseball and history.小题3:At Bill’s home, they didn’t ________.

A．drink some Coke

B．play video games

C．have a pleasant talk

D．watch TV小题4:Three days before graduation, Bill asked Mark to talk because he ________.

A．hoped to go on holiday together

B．wanted to kill himself again

C．hoped to have lunch together

D．wanted to tell him his story小题5:What would Bill probably say at last?

A．You saved my life.

B．I should die.

C．You did a good job.

D．You helped me a lot.

企业为员工集体性的投保商业健康保险，即团体健康保险。其保险费是：（）。

A、是根据对每个雇员的健康评估来决定的

B、是根据环境对雇员的影响程度来决定的

C、是根据保险精算师的分析决定的

D、是根据对雇员的劳动强度来决定的