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【单选题】
如果使用Thread t=new Test()语句创建一个线程，则下列叙述正确的是A.
Test类一定要实现Runnable接口
B.
Test类一定是Thread类的子类
C.
Test类一定是Runnable的子类
D.
Test类一定是继承Thread类并且实现Runnable接口
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反馈参考答案：
举一反三
【单选题】Which of the following should be criticized about assessment?
A.
Assessment should assess language in many different contexts.
B.
Assessment should assess the learning environment， instruction and students.
C.
Assessment should assess the use of language in listening， speaking， reading and writing process.
D.
Assessment should assess results uniquely.
【单选题】Which one of these statements is NOT true about peer assessment?
A.
Peer assessment allows students to give feedback and make recommendations. Peer assessment allows students to learn how to apply quality criteria.
B.
Peer assessment allows students to understand the diversity of individuals.
C.
Peer assessment allows students see the strengths and weaknesses of their own PEP.
D.
Peer assessment allows students to punish other students.
【多选题】在AutoCAD中，可以通过以下方法激活一个命令：
A.
在命令行输入命令名
B.
单击命令对应的工具栏图 标
C.
从下拉菜单中选择命令
D.
鼠标右击，从快捷菜单中选择命令
E.
从面板中选择命令
【单选题】 在下图所 示 电 路 中,电 源 电 压 U = 6 V。若 使 电 阻 R 上 的 电 压 U 1 = 4 V,则 电 阻 R 为( ) 。
A.
2 Ω
B.
4Ω
C.
6Ω
【多选题】在AutoCAD中可以通过以下方法改变一个系统变量的值( )。
A.
在命令行输入系统变量名，然后键入新的值
B.
右击，从快捷菜单中选择系统变量，然后键入新的值
C.
在某些对话框中改变复选框的状态
D.
在下拉菜单中，选择“工具”|“查询”|“设置变量”进行变量设置
【多选题】Which of the following one is included in the post emergency environmental assessment?( )
A.
Assessment of the loss value caused by environmental emergencies
B.
Assessment of the cause of environmental emergencies
C.
Assessment of the response of each department after environmental emergency
D.
Assessment of the environmental impact of environmental emergencies
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