甲烷制冷压缩机的空负荷试车一般要连续运行（）小时。A．1～2 B．2～3 C．3～4

世界最深的洼地是（）

A child-like robot, Wakamaru, developed by Mitsubishi Heavy Industries of Japan and combining the roles of nurse, companion and security guard, will soon be in the market to look after the growing number of old people with no one to look after them.

Cameras implanted under the “ eyebrows” of the robot enable it to “see’’ as it moves around in a house. The images can be sent to the latest mobile telephones, which can show the pictures. Wakamaru speaks with either the voice of a boy or a girl. It is also designed to provide companionship, greeting its “ papa”, when he comes home. Based on a vocabulary of around 10 000 words, it is the first household robot which is able to hold simple conversations. It can not only speak, but also understand answers and react accordingly. It will ask“ Are you all right?” if its owner does not move for some time. If the answer is no, or there is no answer, it will telephone preset numbers, send images and work as a speakerphone. It can recognize up to 10 faces. It can be set to remind forgetful people when it is time to take medicine, eat and sleep.

However, like most robots, it cannot climb stairs. Mitsubishi developed Wakamaru from robots which have already been made to go around nuclear power facilities(设施). “ Looking at the ageing of society and the falling birth rate we decided that this could work as a business. We want to offer it as a product that helps society,’’ said the project chief. The developers plan to sell the robot from April next year at between 5,000 and 6,000 pound.

The life expectancy of Japanese women has shot up to almost 85, the highest in the world. At the same time, extended families are being replaced by nuclear families. This has left many Japanese anxious about their elderly parents. Therefore, the technology has gained nation-wide publicity in Japan.

68.Which of the following is TRUE about Wakamaru?

A.    It is used in some nuclear power facilities.

B.     It can speak but cannot understand answers.

C.     It can go up and down the stairs easily.

D.    It can recognize as many as 10 people.

69.The passage is written with the purpose to ______.

A. introduce a new product  

B solve the aging problems.

C. tell people how to use the robot 

D show the rapid development of technology

70. What can be inferred from the passage ?

A. The robot can dial proper numbers for help

B. The robot is likely to have a promising market.

C. The robot enables the Japanese to live longer

D. Many elderly Japanese are anxious about their future

地下空间的开发利用应贯彻统一规划、综合开发、合理利用、( )的原则。

A．依法治理

B．依法管理

C．充分发挥

D．统一治理

轴类零件最常用的毛坯是______。

A．铸铁和铸钢件

B．焊接件

C．棒料和锻件

采暖通风与空气调节工程初步设计时，采暖部分设计说明应包含的内容中不正确的描述是( )。

A．热源状况、热媒参数、室外管线及系统补水与定压

B．采暖系统形式及管道敷设方式

C．采暖分户热计量设备及控制设备论证

D．采暖设备、散热器类型、管道材料及保温材料的选择