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【简答题】
这个班的孩子真笨 某教师上完课回到办公室，给办公室的其他教师说'三年级二班的学生真笨，这堂课我都给他们讲了三遍，可他们还是听不懂。我是发挥了教师的主导作用了，而且主导了N次了，他们听不懂我有什么办法'。 分析:请针对上述教师的发言，请你分析如何理解教师的主导作用，这位教师全面发挥教师的主导作用了吗?(字数不得少于300字)
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举一反三
【多选题】在滚子推杆盘形凸轮机构设计时，下列作法正确的是 。
A.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “ 失真 ” 现象
C.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
D.
凸轮的基圆半径等于其理论廓线的最小向径
查看完整题目与答案
【单选题】According the two-year-old boy in the interview, what is the reason for the mother wanting her boy to take part in the basketball camp?
A.
His mother is a basketball fan, too.
B.
His mother knows that he is crazy about basketball.
C.
His mother thinks that this can help him grow taller.
D.
His mother expects his to be an excellent basketball player in the future.
查看完整题目与答案
【多选题】在滚子推杆盘形凸轮机构设计时,下列哪些作法是正确的
A.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “失真”现象
C.
凸轮的基圆半径等于其理论廓线的最小向径
D.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
查看完整题目与答案
【多选题】在滚子推杆盘形凸轮机构设计时,下列哪些作法是正确的( )
A.
凸轮的基圆半径等于其理论廓线的最小向径
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “失真”现象
C.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
D.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
查看完整题目与答案
【单选题】The boy, wanting to be independent, _____ his father’s offer to help.
A.
turned away
B.
turned in
C.
turned down
D.
turned out
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【单选题】（ 16 ）若看到程序中有以下事件过程，则可以肯定的是，当程序运行时 Private Sub Click_MouseDown(Button As Integer,_Shift As Integer,X As Single,Y As Single) Print “ VB Program ” End Sub
A.
）用鼠标左键单击名称为 “ Command1 ” 的命令按钮时，执行此过程
B.
）用鼠标左键单击名称为 “ MouseDown ” 的命令按钮时，执行此过程
C.
）用鼠标左键单击名称为 “ MouseDown ” 的控件时，执行此过程
D.
）用鼠标左键或右键单击名称为 “ Click ” 的控件时，执行此过程
查看完整题目与答案
【单选题】若看到程序中有以下事件过程,则可以肯定的是,当程序运行时,_____。
A.
用鼠标左键单击名称为“Command1”的命令按钮时,执行此过程
B.
用鼠标左键单击名称为“MouseDown”的命令按钮时,执行此过程
C.
用鼠标右键单击名称为“MouseDown”的控件时,执行此过程
D.
用鼠标左键或右键单击名称为“Click”的控件时,执行此过程
查看完整题目与答案
【单选题】The boy, wanting to be independent, turned( )his father’s offer of help.
A.
down
B.
over
C.
up
D.
to
查看完整题目与答案
【单选题】According to the twelve-year-old boy in the interview, what is the reason for the mother wanting her boy to take part in the basketball camp?
A.
His mother is a basketball fan, too.
B.
His mother knows that he is crazy about basketball.
C.
His mother thinks that this can help him grow taller.
D.
His mother expects him to be an excellent basketball player in the future.
查看完整题目与答案
【单选题】Each boy and each girl to serve the people in the future.
A.
want
B.
wants
C.
wanting
D.
to want
查看完整题目与答案
相关题目：
【多选题】在滚子推杆盘形凸轮机构设计时，下列作法正确的是 。
A.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “ 失真 ” 现象
C.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
D.
凸轮的基圆半径等于其理论廓线的最小向径
查看完整题目与答案
【单选题】According the two-year-old boy in the interview, what is the reason for the mother wanting her boy to take part in the basketball camp?
A.
His mother is a basketball fan, too.
B.
His mother knows that he is crazy about basketball.
C.
His mother thinks that this can help him grow taller.
D.
His mother expects his to be an excellent basketball player in the future.
查看完整题目与答案
【多选题】在滚子推杆盘形凸轮机构设计时,下列哪些作法是正确的
A.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “失真”现象
C.
凸轮的基圆半径等于其理论廓线的最小向径
D.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
查看完整题目与答案
【多选题】在滚子推杆盘形凸轮机构设计时,下列哪些作法是正确的( )
A.
凸轮的基圆半径等于其理论廓线的最小向径
B.
滚子半径应小于凸轮理论廓线外凸部分的曲率半径时，可避免推杆运动产生 “失真”现象
C.
凸轮的实际廓线是理论廓线的等距曲线，实际轮廓上各点的向径就等于理论廓线上各点的向径减去滚子半径
D.
凸轮的实际廓线与理论廓线具有共同的法线，它们对应的各点处的压力角也相同
查看完整题目与答案
【单选题】The boy, wanting to be independent, _____ his father’s offer to help.
A.
turned away
B.
turned in
C.
turned down
D.
turned out
查看完整题目与答案
【单选题】（ 16 ）若看到程序中有以下事件过程，则可以肯定的是，当程序运行时 Private Sub Click_MouseDown(Button As Integer,_Shift As Integer,X As Single,Y As Single) Print “ VB Program ” End Sub
A.
）用鼠标左键单击名称为 “ Command1 ” 的命令按钮时，执行此过程
B.
）用鼠标左键单击名称为 “ MouseDown ” 的命令按钮时，执行此过程
C.
）用鼠标左键单击名称为 “ MouseDown ” 的控件时，执行此过程
D.
）用鼠标左键或右键单击名称为 “ Click ” 的控件时，执行此过程
查看完整题目与答案
【单选题】若看到程序中有以下事件过程,则可以肯定的是,当程序运行时,_____。
A.
用鼠标左键单击名称为“Command1”的命令按钮时,执行此过程
B.
用鼠标左键单击名称为“MouseDown”的命令按钮时,执行此过程
C.
用鼠标右键单击名称为“MouseDown”的控件时,执行此过程
D.
用鼠标左键或右键单击名称为“Click”的控件时,执行此过程
查看完整题目与答案
【单选题】The boy, wanting to be independent, turned( )his father’s offer of help.
A.
down
B.
over
C.
up
D.
to
查看完整题目与答案
【单选题】According to the twelve-year-old boy in the interview, what is the reason for the mother wanting her boy to take part in the basketball camp?
A.
His mother is a basketball fan, too.
B.
His mother knows that he is crazy about basketball.
C.
His mother thinks that this can help him grow taller.
D.
His mother expects him to be an excellent basketball player in the future.
查看完整题目与答案
【单选题】Each boy and each girl to serve the people in the future.
A.
want
B.
wants
C.
wanting
D.
to want
查看完整题目与答案