单项选择题
A.servlet B.http C.demo D.request
A.node demo.js B.java node demo.js C.cd node.js D.cmd demo.js
A.select*from computer where price>=800 B.select*from computer where price>=1500andprice<=800 C.select*from computer price>=800andprice<=1500 D.select*from computer where price>=800andprice<=1500