【单选题】Computers can be linked together in networks and the Internet is _______ .
A.
the biggest computer working in the world
B.
a combination of master computers in charge of the world-wide network
C.
a super-network joining millions of computers all over the world
D.
a company which is in charge of the world-wide network
【判断题】Super computers can be carried around.
【简答题】火锅中存在哪些健康隐患,如何健康吃火锅?
【判断题】货已采购入库,估计发票账单本月不可到达, 会计录入暂估采购成本,生成暂估入库凭证。
【简答题】冬季怎样吃火锅健康,冬天吃火锅需注意哪些事项?
【简答题】纸火锅(如图)在京城悄然兴起,这种纸火锅精巧漂亮,白色的底衬着火锅食料,干净、醒目;纸火锅在使用时无烟、无味;不会被火点燃.纸火锅烧不着的原因是______;人们常使用固体酒精做为纸火锅加热的热源.小刚观察到服务员用盖子熄灭固体酒精.服务员利用的灭火原理是______.
【单选题】CRH2型动车组的控制电源是由()供电的。