在OutputStream类的常用方法中哪个是清空输出流的方法A．fedcba B． 发布时间：2017-06-26 23:34 │ 来源：www.tikuol.com 题型：单项选择题 问题： 在OutputStream类的常用方法中哪个是清空输出流的方法A．fedcbaB．abcdefC．afbecdD．defabc
题型：单项选择题 阅读下面对话，从方框内7个选项中选择5个恰当的句子完成此对话。 A. Could you tell me why?B. We'll have more cars then.C. As for me, I'd rather use my old bike than buy a car.D. You're right.E. I don't think it necessary for me to buy a car.F. It will turn out 500,000 cars a year.G. Never mind.A: Do you know that a car factory will be built in our city? B: Yes, I do. __1__A: Great! __2__B: But I think it will mean more pollution and heavy traffic.A: Really? Then you don't want to have more cars, do you? B: No, I don't. __3__A: Well… you think a bike is better than a car? __4__ B: __5__ I hardly travel to other places because I have no time, and no money, either. A: Oh, I see. But I think things are getting better and better. 1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 查看答案
题型：单项选择题 选择龙口位置时要考虑的技术要求有( )。A．一般来说，龙口应设置在河床主流部位B．龙口方向力求避开主流C．龙口应选择在耐冲河床上D．龙口附近应有较宽阔的场地E．如果龙口河床覆盖层较薄，则应清除 查看答案
题型：单项选择题 在数据库应用中，一般一个SQL语句可产生或处理一组记录，而数据库主语言语句一般一次只能处理一个记录，其协调可通过下列 ______ 技术来实现。A) 指针 B) 游标 C) 数组 D) 栈 查看答案