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问答题 开发 Java 应用程序需要经过哪些主要步骤? Java 源文件是由什么组成的?一个源文件中必须要有 public 类吗? 如果 JDK 的安装目录是 D:\jdk ,应当怎样设置 path 的值? 实践题 安装 JDK jdk-8u102-windows-x64.exe ( 64 位机器) http://pan.baidu.com/s/1dFunMsp jdk-8u40-windows-i586.exe ( 32 位机器) http://pan.baidu.com/s/1dF0Zxyp 2. JDK 安装完成后,完成本题。(源程序和运行结果截图)。 实验 1. 一个简单的 Java 应用程序。(见附件 Hello.java ) Hello.java 【实验目的】掌握开发 Java 应用程序的 3 个步骤。 【实验要求】按模板要求,将【代码】替换为 Java 程序代码,该程序在命令行窗口输出两行文字“你好”和“ We are students” 。 3.安装集成开发环境 eclipse 。(界面截图) eclipse-java-photon-R-win32-x86_64 ( 64 位机器): 链接: https://pan.baidu.com/s/1FNLSt99LaPmRyQrypp2mzQ 提取码: bavv eclipse-java-2018-09-win32 ( 32 位机器): 链接: https://pan.baidu.com/s/1UBEOFP7sR_QeTz6Frq3KGw 提取码: sg63 下载,解压缩,然后单击 eclipse.exe 运行即可。
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举一反三
【单选题】They stood there and opened their eyes wide, _______ what was happening. [     ]
A.
pulling over
B.
watching over
C.
getting over
D.
going over
【单选题】We usually ________CCTV news at 7:00 in the evening. [     ]
A.
watch
B.
watches
C.
is watching
D.
are watching
【单选题】—What’s Jim doing now  ? —He ________ TV with his father in the living room.
A.
is watching
B.
are watching
C.
is watch
D.
are watch
【单选题】—Tom often _____ TV on Saturday evenings, but now he is _____ stories.
A.
watches; reading
B.
watching; reads  
C.
looks; reading
【单选题】治疗青光眼宜选用( )。 查看材料
A.
左氧氟沙星滴眼液
B.
复方托吡卡胺滴眼液
C.
毛果芸香碱滴眼液
D.
碘苷滴眼液
E.
阿昔洛韦滴眼液
【单选题】According to Dela, among most diabetics the importance of exercise is __________of watching their diet. 查看材料
A.
as poorly understood as
B.
as well understood as
C.
less understood than
D.
better understood than the importance
【判断题】持用过期的车票乘车时,除按无票处理外并送交公安部门处理。
A.
正确
B.
错误
【判断题】表面粗糙度符号,代号在图样上一般注在可见轮廓线上 、 尺寸界线、引出线或 它 们的延长线上。
A.
正确
B.
错误
【简答题】Anne couldn’t concentrate ________ what she was doing while her family were watching TV. A) to B) on C) for D) in
【单选题】54 查看材料
A.
staring at
B.
glancing at
C.
looking
D.
watching
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