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【判断题】
半导体探测器使用的半导体有两种,一种叫做N型,另一种叫做S型。( )A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】将scott用户解锁的命令是。
A.
alter user scott unlock;
B.
alter usr scott account unlock
C.
alter user scott lock;
D.
alter user scott account lock
【单选题】What will be the result of using the SQL> DROP USER SCOTT CASCADE； command？（）
A.
The user， Scott， is dropped， all the objects in Scott’s schema are placed in the Recycle Bin， and the objects that are already in the Recycle Bin are dropped.
B.
The user， Scott， is dropped， all the objects in Scott’s schema are placed in the Recycle Bin， and all the objects in the Recycle Bin， belonging to the user Scott， are not dropped.
C.
The user， Scott， is dropped， all the objects in the Scott’s schema are not placed in the Recycle Bin， and the objects in the Recycle Bin， belonging to the user， Scott， are not dropped.
D.
The user， Scott， is dropped， all the objects in Scott’s schema are not placed in the Recycle Bin， and the objects in the Recycle Bin are dropped.
【简答题】. 在课堂上运用实物投影仪直观地引导学生主动去质疑、调查、撂究“近大远小”的透视原理。 [ 课堂案例 ] 为什么老师给你们看的这幅画也分别画出了一大、一小的两个人物,却不能让我们产生纵深的空间感?我们来做个实验的游戏。 ( 教师利用实物投影仪演示 ) 第一步:将实物投影仪的摄像头对准学生们,引导学生观察银幕上的图像,第一排的同学在银幕的下方;而后面几排的同学在银幕的上方。 (1) 问学生们:“摄像...
【简答题】工程上常用的四种图示方法分别是:( )、( )、标高投影法和透视投影法。其中( )投影法就是将形体向两个或多个互相垂直的投影面上作正投影,然后把投影面按一定的规则展平到同一平面上。其中,( )投影图能同时表现物体的长、宽、高三个方向,直观性较强。
【单选题】Coretta Scott King Coretta Scott King, the widow of civil rights, activist Martin Luther King Jr. , has died. She was 78. Mrs. Bagley said her body would be returned to her home, Atlanta, for entombme...
A.
Y
B.
N
C.
NG
【单选题】Scott finds information that counters the claims of the production team. However, Scott decides to ignore the new-found evidence in support of the team's decision. Scott is being adversely influenced ...
A.
the illusion of control.
B.
organizational learning.
C.
groupthink.
D.
devil's advocacy.
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