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【简答题】
图为某液压传动系统原理图,该系统能完成“快进→一工进→二工进→快退→原位停止”的动作循环,试回答下列问题: (1) 元件 6 的名称是 ________ ,元件 11 的名称是 ____________________ 。 (2) 在该系统中,元件 2 的作用是 ________ ,元件 3 的作用是 ________ 。 (3) 快进时,液压缸 ________ 形成差动连接。 ( 填“能”或“不能” ) (4) 填写动作循环表 ( 题 68 表 ) 。 题 68 表 动作 电磁铁工作状态 YA1 YA2 YA3 YA4 YA5 快进 一工进 二工进 快退 原位停止 注: “+”表示电磁铁通电,“-”表示电磁铁断电。 (5) 一工进时,进给速度由元件 ________ 调节控制,二工进时,进给速度由元件 ________ 调节控制。
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参考答案：
举一反三
【多选题】Which is the right statement about Mayo's conclusion about Hawthorne Studies?( )
A.
P eople’s behavior and attitudes are closed related.
B.
Group factors significantly affect individual behaviors.
C.
Group standards establish individual worker output.
D.
M oney is less a factor in determining output than are group standards
查看完整题目与答案
【多选题】从功能的角度来看,局域网的特点包括 ( ) 。
A.
用户数量较少
B.
网络传输速率高
C.
误码率高
D.
使用费用低
查看完整题目与答案
【单选题】Which of the following abbreviation is completely right?
A.
N.W: 毛重
B.
G.W: 净重
C.
P/I: 订单确认文件
D.
Voy.: 航次
查看完整题目与答案
【多选题】从功能的角度来看,局域网的特点包括 ________
A.
用户个数较少
B.
网络传输速率高
C.
误码率高
D.
使用费用低
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【单选题】在设计和选择换热器时，压强很高的流体应安排其走哪程（）
A.
管程
B.
壳程
C.
如何安排无关紧要
D.
不好说
查看完整题目与答案
【多选题】从功能角度看,局域网的特点包括( )。
A.
用户个数较少
B.
网络传输速率高
C.
误码率高
D.
使用费用低
查看完整题目与答案
【单选题】Which of the following plans (平面图) is the right position of the child’s room?
A.
= door = stairsF
B.
= front room
C.
= child’s room P = passage K
D.
= kitchen W= washroom
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【单选题】As shown in the figure, the right-angle folding rod with circular cross-section is exerted with the concentrated force P on the section C . Assume the bending stiffness of the rod is EI and the torsio...
A.
(1), (2)
B.
(2), (3)
C.
(1), (3)
D.
all are correct
查看完整题目与答案
【多选题】Which of the following statements is NOT right?
A.
Phonemic transcription are placed between / /.
B.
In Chinese, /p/ and /ph/ are phonetic.
C.
In English, /p/ and /ph/ are phonemic.
D.
The /p/ in pill is unaspirated.
查看完整题目与答案
【单选题】Which of the following description is not right?
A.
P thon uses the CSV library's loads() to convert JSON strings into built-in objects
B.
loads() is used to convert JSON into built-in objects
C.
P thon's dictionary is converted to the Json object type
D.
P thon's None is converted to null for Json
查看完整题目与答案
相关题目：
【多选题】Which is the right statement about Mayo's conclusion about Hawthorne Studies?( )
A.
P eople’s behavior and attitudes are closed related.
B.
Group factors significantly affect individual behaviors.
C.
Group standards establish individual worker output.
D.
M oney is less a factor in determining output than are group standards
查看完整题目与答案
【多选题】从功能的角度来看,局域网的特点包括 ( ) 。
A.
用户数量较少
B.
网络传输速率高
C.
误码率高
D.
使用费用低
查看完整题目与答案
【单选题】Which of the following abbreviation is completely right?
A.
N.W: 毛重
B.
G.W: 净重
C.
P/I: 订单确认文件
D.
Voy.: 航次
查看完整题目与答案
【多选题】从功能的角度来看,局域网的特点包括 ________
A.
用户个数较少
B.
网络传输速率高
C.
误码率高
D.
使用费用低
查看完整题目与答案
【单选题】在设计和选择换热器时，压强很高的流体应安排其走哪程（）
A.
管程
B.
壳程
C.
如何安排无关紧要
D.
不好说
查看完整题目与答案
【多选题】从功能角度看,局域网的特点包括( )。
A.
用户个数较少
B.
网络传输速率高
C.
误码率高
D.
使用费用低
查看完整题目与答案
【单选题】Which of the following plans (平面图) is the right position of the child’s room?
A.
= door = stairsF
B.
= front room
C.
= child’s room P = passage K
D.
= kitchen W= washroom
查看完整题目与答案
【单选题】As shown in the figure, the right-angle folding rod with circular cross-section is exerted with the concentrated force P on the section C . Assume the bending stiffness of the rod is EI and the torsio...
A.
(1), (2)
B.
(2), (3)
C.
(1), (3)
D.
all are correct
查看完整题目与答案
【多选题】Which of the following statements is NOT right?
A.
Phonemic transcription are placed between / /.
B.
In Chinese, /p/ and /ph/ are phonetic.
C.
In English, /p/ and /ph/ are phonemic.
D.
The /p/ in pill is unaspirated.
查看完整题目与答案
【单选题】Which of the following description is not right?
A.
P thon uses the CSV library's loads() to convert JSON strings into built-in objects
B.
loads() is used to convert JSON into built-in objects
C.
P thon's dictionary is converted to the Json object type
D.
P thon's None is converted to null for Json
查看完整题目与答案
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