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【单选题】
回转体的截交线的形状是( )
A.
封闭的平面多边形
B.
封闭的空间折线
C.
封闭的空间曲线
D.
封闭的平面曲线或平面多边形
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参考答案：
举一反三
【单选题】提速道岔钢轨下设置( )厚橡胶垫板。
A.
5mm
B.
6mm
C.
10mm
D.
12mm
查看完整题目与答案
【多选题】序时账一般包括
A.
日期
B.
凭证号
C.
科目
D.
摘要
E.
数量
查看完整题目与答案
【单选题】C语言中,关于 while 和 do while 循环语句的正确叙述是( )
A.
while 语句的循环控制条件为真时结束循环。
B.
 do while 语句的循环控制条件为真时结束循环。
C.
while 循环体中不允许是空语句。
D.
do while 的循环体至少被执行一次。
查看完整题目与答案
【简答题】阅读理解。 Margaret Cook is a professional, married woman with two young children. The elder, who is four, has just started at a local primary school. It is a school that she was eager for her daughter to ...
查看完整题目与答案
【单选题】Rodney Mace, 35, is married with two young children, and is a part-time teacher of architectural history. 'I am constantly surprised by other people’s surprise, when they come to the house and see me ...
A.
they have a truly equal partnership
B.
the husband enjoys staying at home
C.
they earn more money
D.
the wife has a fun-time job
查看完整题目与答案
【单选题】在一项经典的实验研究中，研究者选定出生后2个月、5个月和8个月三个年龄段的儿童，把毛巾(刺激变量)分别放在他们的脸上，以考察不同年龄儿童的反应。这种研究方式属于(    )。
A.
整体研究    
B.
横断研究    
C.
纵向研究    
D.
个案研究
查看完整题目与答案
【单选题】两圆x 2 +y 2 -4x+6y=0和x 2 +y 2 -6x=0的圆心连线方程为 ( )
A.
x+y+3=0
B.
2x-y-5=0
C.
3x-y-9=0
D.
4x-3y+7=0
查看完整题目与答案
【单选题】Rodney Mace, 35, is married with two young children, and is a part-time teacher of architectural history. 'I am constantly surprised by other people's surprise, when they come to the house and see me ...
A.
they have a truly equal partnership
B.
the husband has more sense of household responsibility
C.
the couple cares little about other people's comment on their life
D.
the wife has a full time job
查看完整题目与答案
【单选题】以（5，6）和（3，-4）为直径端点的圆的方程是（　　）
A.
x 2 +y 2 +4x-2y+7=0
B.
x 2 +y 2 +8x+4y-6=0
C.
x 2 +y 2 -4x+2y-5=0
D.
x 2 +y 2 -8x-2y-9=0
查看完整题目与答案
【判断题】教师不仅要学而不厌,诲人不倦,更要把教学当作一门艺术,把育人当作一门艺术。( )
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】提速道岔钢轨下设置( )厚橡胶垫板。
A.
5mm
B.
6mm
C.
10mm
D.
12mm
查看完整题目与答案
【多选题】序时账一般包括
A.
日期
B.
凭证号
C.
科目
D.
摘要
E.
数量
查看完整题目与答案
【单选题】C语言中,关于 while 和 do while 循环语句的正确叙述是( )
A.
while 语句的循环控制条件为真时结束循环。
B.
 do while 语句的循环控制条件为真时结束循环。
C.
while 循环体中不允许是空语句。
D.
do while 的循环体至少被执行一次。
查看完整题目与答案
【简答题】阅读理解。 Margaret Cook is a professional, married woman with two young children. The elder, who is four, has just started at a local primary school. It is a school that she was eager for her daughter to ...
查看完整题目与答案
【单选题】Rodney Mace, 35, is married with two young children, and is a part-time teacher of architectural history. 'I am constantly surprised by other people’s surprise, when they come to the house and see me ...
A.
they have a truly equal partnership
B.
the husband enjoys staying at home
C.
they earn more money
D.
the wife has a fun-time job
查看完整题目与答案
【单选题】在一项经典的实验研究中，研究者选定出生后2个月、5个月和8个月三个年龄段的儿童，把毛巾(刺激变量)分别放在他们的脸上，以考察不同年龄儿童的反应。这种研究方式属于(    )。
A.
整体研究    
B.
横断研究    
C.
纵向研究    
D.
个案研究
查看完整题目与答案
【单选题】两圆x 2 +y 2 -4x+6y=0和x 2 +y 2 -6x=0的圆心连线方程为 ( )
A.
x+y+3=0
B.
2x-y-5=0
C.
3x-y-9=0
D.
4x-3y+7=0
查看完整题目与答案
【单选题】Rodney Mace, 35, is married with two young children, and is a part-time teacher of architectural history. 'I am constantly surprised by other people's surprise, when they come to the house and see me ...
A.
they have a truly equal partnership
B.
the husband has more sense of household responsibility
C.
the couple cares little about other people's comment on their life
D.
the wife has a full time job
查看完整题目与答案
【单选题】以（5，6）和（3，-4）为直径端点的圆的方程是（　　）
A.
x 2 +y 2 +4x-2y+7=0
B.
x 2 +y 2 +8x+4y-6=0
C.
x 2 +y 2 -4x+2y-5=0
D.
x 2 +y 2 -8x-2y-9=0
查看完整题目与答案
【判断题】教师不仅要学而不厌,诲人不倦,更要把教学当作一门艺术,把育人当作一门艺术。( )
A.
正确
B.
错误
查看完整题目与答案
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