题目

Many young people can use the computer, but few of them know how to look after them． Remember the following when you use the computer． Keep your computer in a cool, dry room．Too much or too little heat is bad for computers．Damp is also bad for them．Most computers work best at a temperature of 5-30 degrees centigrade．Computer, just like some people, may prefer（更喜欢）autumn to （比起） summer and winter．Do not let people smoke cigarettes near your computer．Smoke of all kinds is very bad for many parts of a computer and can cause many problems． Do not eat or drink wh军阀混战时期,控制安徽、浙江、山东、福建等省,掌握北京政府实权的军阀为A.直系军阀B.奉系军阀C.桂系军阀D.皖系军阀