皮皮学，免费搜题
登录
搜题
【单选题】
IP 地址与它的掩码取反相与,所得的非零点分十进制是此IP地址的( )A.
A 类
B.
主机地址
C.
网络地址、
D.
解析地址
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】听力原文：M: What are you looking for? W: I'm looking for the reference book professor Li recommends. M: What's the name of the book? W: Educational Psychology. M: It's on the shelf over there. I saw it ju...
A.
She wants to buy a textbook.
B.
She is looking for a new novel
C.
She wants to buy a reference book.
D.
She is just looking.
【单选题】—What are you looking for? —I’m looking for the watch _______ I bought yesterday.
A.
which
B.
who
C.
whose
【简答题】请阅读下面的名言，并谈谈自己对友情的看法。 “A friend in need is a friend indeed.” 谈感想 结合自己一次经历 以此为题 要求：1.内容必须包括： 2.词数：120词。
【单选题】— Good morning , May I help you ? — No, thank you. I’m just looking around. — .
A.
I’m looking forward to it.
B.
How are you feeling today?
C.
I’ll write you a check right now.
D.
Take your time , then.
【单选题】听力原文：M: What are you looking for, Alice? W: I'm looking for my pen, Mike. I can't see my pen. M: It's here, on the desk. W: I'm sorry. But I'm getting so nearsighted. I'm afraid I have to wear glasses...
A.
Classmates.
B.
Doctor and patient.
C.
Teacher and student.
【单选题】关于集成扩展芯片的下列描述中______是不正确的。
A.
74244由8个三态门电路组成，可实现两路4位并行输入接口的扩展功能
B.
当选通信号为高电平时三态门导通，反之三态门截止，输入和输出之间呈高阻状态
C.
采用总线方式扩展输入端口时，应将80C51读端口的时序信号与该端口的地址选通信号一同作为74244的选通信号
D.
本章实例2的做法是，将80C51的/RD引脚与某根地址线引脚通过一个或门接到74244的选通端/OE
【简答题】I’m looking forward to (居住) in the new flat.
【单选题】—What are you looking for? —I’m looking for the book _____ I bought yesterday. [ ]
A.
who
B.
which
C.
whose
D.
where
相关题目：
参考解析：
知识点：
题目纠错 0
发布
