皮皮学，免费搜题
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搜题
【多选题】
8086有两种工作模式，即最大模式和最小模式，其中最小模式的特点是（）。A.
8086提供全部控制信号
B.
必须使用总线控制器8288
C.
必须使用总线收发器
D.
必须使用总线锁存器
E.
构成单处理器系统
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W: Let's do some warm-up exercises before beginning our swimming. We should always start by exercising by the side of the pool to warm up our muscles. M: Yes, you are right. Let's begin. One, two...
A.
Keeping fit
B.
Health issues
C.
Swimming
D.
Shopping
【单选题】听力原文：M: Have you done this before? W: No. But if we follow the directions, we shouldn't have any trouble. What is important for them to do?
A.
Practice together.
B.
Experience.
C.
Carry out instructions.
【简答题】简答题: 1. 图示环境科学的分支学科。 2. 简述环境化学的研究内容、特点及研究领域。 3.环境污染物有哪些类别?主要的化学污染物有哪些? 3.简述环境效应的分类,各举一例。
【单选题】听力原文：W: Why do we have to finish this proposal tonight? It's already 6 p. m. Can't we complete it tomorrow? M: It has to go to the post office before twelve tonight. We must make sure that all the fig...
A.
4 hours.
B.
6 hours.
C.
12 hours.
D.
18 hours.
【简答题】W e all need a healthy environment, but we produce waste every day and it does harm to our environment. Though we are young, we can still do something to help. In fact, even the st everyday acti...
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