皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【简答题】
题8．5．5图所示是并励电动机能耗制动的接线图。所谓能耗制动，就是在电动机停车它的电枢从电源断开而接到一个大小适当的电阻R上，励磁不变。试分析制动原理。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【简答题】色彩主要分为两类:____________和___________。
查看完整题目与答案
【单选题】According to the passage, why is exercise important?
A.
Because it is a fashion.
B.
Because it is popular among the young.
C.
Because it is good for our health.
D.
Because it is not good for children.
查看完整题目与答案
【简答题】Passage1 Why don't birds get lost on their long flights from one place to another? Scientists have puzzled over this question for many years. Now they're beginning to fill in the blanks. Not long ago,...
查看完整题目与答案
【单选题】关于氨基酸,下列描述正确的是( )
A.
组成和结构不同的氨基酸具有相近的等电点
B.
氨基酸的构型常采用 R/S 标记法
C.
氨基酸分子中含有氨基和羧基，因此具有羧酸与胺类化合物的性质
D.
氨基酸分子很稳定，一般不与酸或碱反应
查看完整题目与答案
【单选题】FURTHER LISTENING PASSAGE 1 Why is dating rare in Afghanistan ? A . Because dating is illegal. B . Because boys and girls spend all their time studying. C . Because girls are not allowed to go out wit...
A.
B.
C.
D.
D
查看完整题目与答案
【判断题】色彩主要分为有彩色系和独彩色系两大类。()
A.
正确
B.
错误
查看完整题目与答案
【简答题】Listen to the passages and give short answers to the questions.Passage 1 Why does Hery want to lose some weight?
查看完整题目与答案
【单选题】运用各种体育的方法手段治疗疾病和创伤,进而促进人体各组织器官机能的恢复的体育是
A.
健身运动
B.
医疗体育
C.
防卫体育
D.
竞技体育
查看完整题目与答案
【简答题】Passage1 Why don't birds get lost on their long flights from one place to another? Scientists have puzzled over this question for many years. Now they're beginning to fill in the blanks. Not long ago,...
查看完整题目与答案
【单选题】passage 2 passage 1 1 Why would poor people rank their relationships according to their importance?
A.
A  They want to find delight in relationships.
B.
B  They rely on others to get by.
C.
C  They hope to be bound to others closely.
D.
They have limited resources at hand.
查看完整题目与答案
相关题目：
【简答题】色彩主要分为两类:____________和___________。
查看完整题目与答案
【单选题】According to the passage, why is exercise important?
A.
Because it is a fashion.
B.
Because it is popular among the young.
C.
Because it is good for our health.
D.
Because it is not good for children.
查看完整题目与答案
【简答题】Passage1 Why don't birds get lost on their long flights from one place to another? Scientists have puzzled over this question for many years. Now they're beginning to fill in the blanks. Not long ago,...
查看完整题目与答案
【单选题】关于氨基酸,下列描述正确的是( )
A.
组成和结构不同的氨基酸具有相近的等电点
B.
氨基酸的构型常采用 R/S 标记法
C.
氨基酸分子中含有氨基和羧基，因此具有羧酸与胺类化合物的性质
D.
氨基酸分子很稳定，一般不与酸或碱反应
查看完整题目与答案
【单选题】FURTHER LISTENING PASSAGE 1 Why is dating rare in Afghanistan ? A . Because dating is illegal. B . Because boys and girls spend all their time studying. C . Because girls are not allowed to go out wit...
A.
B.
C.
D.
D
查看完整题目与答案
【判断题】色彩主要分为有彩色系和独彩色系两大类。()
A.
正确
B.
错误
查看完整题目与答案
【简答题】Listen to the passages and give short answers to the questions.Passage 1 Why does Hery want to lose some weight?
查看完整题目与答案
【单选题】运用各种体育的方法手段治疗疾病和创伤,进而促进人体各组织器官机能的恢复的体育是
A.
健身运动
B.
医疗体育
C.
防卫体育
D.
竞技体育
查看完整题目与答案
【简答题】Passage1 Why don't birds get lost on their long flights from one place to another? Scientists have puzzled over this question for many years. Now they're beginning to fill in the blanks. Not long ago,...
查看完整题目与答案
【单选题】passage 2 passage 1 1 Why would poor people rank their relationships according to their importance?
A.
A  They want to find delight in relationships.
B.
B  They rely on others to get by.
C.
C  They hope to be bound to others closely.
D.
They have limited resources at hand.
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题