2014年度北京工伤保险缴费基数为多少？

玻璃体的性质错误的是( )

A．凝胶样物质
B．无血管
C．具有支持减震作用
D．相对免疫赦免
E．最主要的成分是胶原

Robots have come a long way since 15th century. We’ve got robots to build cars, carry heavy things, work in dangerous places and explore planets. But things haven’t stopped there.

In 1986, Honda made a robot called ASIMO. And now, it has been developed greatly. Standing at 130cm and weighing 54kg. ASIMO is very much like a small astronaut wearing a bag on the back. And he can walk, flight, climb and run fast. Isn’t it wonderful?

The world’s first robot teacher is Saya. With her human-like face, she can show expressions like happiness, surprise, sadness, dislike, fear and she can even smile or show anger at students, which look much like a real teacher’s. To do this, her rubber skin is pulled from the back with motors inside. And her eyes and mouth have wires(电线) too. She can also say some simple words like “hello” or “thank you”.

In the UK, the development of robots is exciting. The mini-robots will send food, clean floors, collect and throw away waste. These robots can open doors by themselves and stop if anything or anyone is in the way.

These mini-robots are very useful for controlling infection(传染). Usually clean and dirty work is done by the same person, but here, you’ll have robots that do”dirty work”, like collecting dirty sheets, or taking away hospital waste; and you’ll have robots that do”clean work”, like bringing meals or clean sheets to patients. The robots have separate work so there’s no way for infection, which is great. But of course, robots would not take the piece of humans, but would free up more time for nurses to be with patients.

But if this is what it’s like in 2011, what’s it going to be like to 2021?

小题1:In the following, which is ASIMO’s behavior?

A．Smiling at people, saying “hello”.

B．Sending food or opening doors by himself

C．Fighting, climbing or running fast

D．Collecting waste for patients小题2:What makes Saya look real?

A．Her face and rich expressions

B．Her clothes and shoes

C．Her walking and running speed

D．Her rich knowledge小题3:Which of the following is true according to the passage?

A．Robots have come a long way since 1986.

B．The first robot teacher was made by Honda.

C．Saya looks like a small astronaut.

D．If anyone or anything is in the way, mini-robots will stop.小题4:The main idea of Paragraph 5 is that _______.

A．nurses would have more free time with patients

B．robots would not take the place of humans

C．dirty and clean work is always done by the same person

D．mini-robots are useful for controlling infection

武夷山景区有一种电动观光车的质量是1200kg，空载时轮胎与地面的总接触面积为0.1m²．求：

（1）车的重力多大？（g=10N/kg）

（2）空载时车对水平路面的压强多大？

（3）观光车在水平路面上匀速行驶3000m，用了300s，速度是多大？此过程中牵引力为2000N，则牵引力做功多少？

某项目承包人，在收到变更指示的第8天，向监理人提交“变更报价书”。总监理工程师在收到承包人“变更报价书”后的第20天，约请承包人商量确定变更价格。在此事件中()。

A.承包人提交“变更报价书”超过时效 

B.总监理工程师约请承包人商定变更价格超过时效 

C.承包人提交“变更报价书”没有时间要求 

D.总监理工程师约请承包人商定变更价格没有时间要求

（）是为使不合格产品符合要求而对其所采取的措施；（）是为使不合格产品满足预期用途而对其所采取的措施。