Robots have been designed to do many things-play music，work in hospitals，but run a restaurant? There are two robot receptionists(接待员) and six robot waitresses and waiters in the Dalu Robot Restaurant in Jinan，Shandong．One hundred customers can eat in the restaurant at a time．Two of the robots serve drinks，while the other four serve the food． Not all the work in the restaurant is done by them．There are also people working there，especially in the kitchen．The cooks are humans because the robots don’t have the skills to cook．

小题1:Robots can play music．

小题2:Six robots work in the Dalu Robot Restaurant．

小题3:No people work in the kitchen．

小题4:Only a few customers can eat in the restaurant at a time．

小题5:The robots can’t cook delicious food．

据统计，全国风机安装功率在（）万千瓦以上，年耗电量占全国总用电量的10%左右。

A．1000；

B．2000；

C．3000；

D．4000