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【单选题】
如图所示,一只钢球从圆槽的顶端滑下,滑到最低点时,若钢球受到的一切外力同时消失, 则钢球的运动路线和运动快慢情况是( )
A.
沿路线 1 运动,运动越来越慢
B.
沿路线 2 运动,运动快慢不变
C.
沿路线 3 运动,运动越来越快
D.
沿路线 4 运动,运动越来越快
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参考答案:
举一反三
【判断题】圆形涵洞的管节都定型为1m孔径
A.
正确
B.
错误
【单选题】The example of CARR is used by the author to indicate that .
A.
there are many stories to be told
B.
we are all historians in a sense
C.
history dominates us
D.
we should use our history to our advantage
【多选题】在Indesign 中,可以通过以下哪些方法添加表格:
A.
通过“置入”命令导入表格
B.
通过“粘贴”命令导入表格
C.
当在文本框的左上角处有指针闪烁时,选择菜单“表”|“插入表”命令,打开“插入表”对话框添加表格
D.
当在文本框的左上角处有指针闪烁时,按“Ctrl+Shift+Alt+T”,打开“插入表”对话框添加表格
【单选题】—What do you think of the two pairs of shoes? —They don't fit me well. They are ______ too big ______ too small. [     ]
A.
either; or
B.
not only; but
C.
both; and
D.
neither; nor
【简答题】The example of Carr is used by the author to indicate that .A. There are many stories to be told B. We are all historians in a sense. C. History dominates us D. We should use our history to our advant...
【判断题】由于CaCO 3 的分解反应是吸热的,故它的生成焓为负值。
A.
正确
B.
错误
【多选题】一张幻灯片做完了,接着制作第二张幻灯片,可通过以下方法()在演示文稿中添加幻灯片。
A.
打开[插入]菜单,选择[新幻灯片]选择,屏幕上立刻出现了一张新幻灯片
B.
使用Ctrl+M快捷键,也可以插入新幻灯片
C.
在屏幕左下列的[幻灯片]选项卡中,用鼠标单击要插入幻灯片的位置,按一下键盘上的回车键即可
D.
使用Ctrl+S快捷键,同样可以插入新幻灯片
【单选题】The example of Carr is used by the author to indicate that _______ .
A.
there are many stories to be told
B.
we are all historians in a sense
C.
we should use our history to our advantage
D.
history dominates us
【单选题】The example of Carr is used by the author to indicate that .
A.
there are many stories to be told
B.
we are all historians in a sense
C.
history dominates us
D.
we should use our history to our advantage
【单选题】What is the basic difference between the two classes of theories?A.It concerns the place
A.
7:What is the basic difference between the two classes of theories? A.It concerns the place and time of the formation of matter.
B.
It is whether the universe will continue to expand or not.
C.
It is the current state of the universe.
D.
The variations on evolutionary theories cause the difference.
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