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【简答题】
The world is divided (分) into two parts. One half of the world is rich and is poor. In the poor part, a lot of people have never got enough to eat. When they are ill, the hospitals can receive them because they have no enough . In the rich part, a lot of people too much. For example, a dog or a cat in North America eats more than a child in poor countries. The poor countries have some other difficult problems. Sometimes the land is too poor to grow on. People there don’t have rich land or enough water. The land can be made better, but a lot of things must be done. The people be taught and water must be found. But rich countries have problems. too. There’re not good places to . Sometimes the air is not clean and the rivers are too dirty to swim in or drink. The roads and streets are full of people and buses. Cars and buses have to move . Noise is too much. Some people don’t have houses. People must do something about the problems. People must clean the air and the rivers, and they must them clean. People have to build more houses. we can’t do these things easily. 小题1: A.others B.the others C.another D.the other 小题2: A.none of B.all of C.some of D.any of 小题3: A.beds B.medicine C.time D.money 小题4: A.drink B.exercise C.eat D.sleep 小题5: A.everything B.something C.nothing D.anything 小题6: A.can B.needn’t C.must D.may not 小题7: A.stay B.sleep C.sit D.live in 小题8: A.fast B.quickly C.slowly D.easily 小题9: A.make B.keep C.become D.do 小题10: A.And B.So C.But D.Because
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【判断题】成像系统将实际三维空间分成物空间和像空间两个独立的部分。当光线从左到右传播时,物位于成像系统的左侧,像位于成像系统的右侧。
A.
正确
B.
错误
【单选题】以下关于进程的描述,错误的是( )。
A.
进程是动态的概念
B.
进程执行需要处理机
C.
进程是有生命期的
D.
进程是指令的集合
【简答题】3-8.氩弧焊目前主要用于镁、铝、钛及其合金和( )的焊接,有时也用于合金钢材料焊接。
【简答题】进程之间的联系称之为进程通信, 【】是进程通信的工具
【单选题】下面对进程的描述中,错误的是____。
A.
进程是指令的集合;
B.
进程是有生命周期的;
C.
进程是动态的概念;
D.
进程执行需要处理机;
【单选题】多进程所指的进程是指
A.
主控进程
B.
辅助进程
C.
主控进程和辅助进程
D.
主控进程或辅助进程
【判断题】硬化指数 n 大时,表示冷变形时硬化显著,对后续变形工序有利。
A.
正确
B.
错误
【简答题】进程之间的联系称之为进程通信,__________是进程通信的工具。
【多选题】下面关于物像及其相关概念的正确陈述是:
A.
可以用屏直接接收的物(像)即为实物(像),不能用屏直接接收的物(像)即为虚物(像)。
B.
成像系统将实际三维空间分成物空间和像空间两个独立的部分。
C.
实物、虚像对应发散同心光束,虚物、实像对应会聚同心光束。
D.
位于成像系统左侧的实际光线是物空间光线,位于成像系统右侧的实际光线是像空间光线。
【多选题】下面关于物像及其相关概念正确的是:
A.
可以用屏直接接收的物(像)即为实物(像),不能用屏直接接收的物(像)即为虚物(像)。
B.
成像系统将实际三维空间分成物空间和像空间两个独立的部分。
C.
实物、虚像对应发散同心光束,虚物、实像对应会聚同心光束。
D.
位于成像系统左侧的实际光线是物空间光线,位于成像系统右侧的实际光线是像空间光线。
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