皮皮学,免费搜题
登录
搜题
【简答题】
稳压电源电路如图所示,(1) 该电路输出电压U0值为多少伏?(2) 若测得UC=12V,问U2值为多少?(3)若已知U2=20V,并测得UC=18V,分析电路发生了什么的故障?
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【多选题】下列属于法治思维的基本内容的有
A.
党的领导
B.
法律至上
C.
公平正义
D.
权力制约
【单选题】国家一、二等水准测量单一水准路线高差闭合差的分配原则是()。
A.
按距离成比例反号分配
B.
按距离成比例网号分配
C.
按测段平均反号分配
D.
按测段平均网号分配
【单选题】一What can I do for you?
A.
Yes,you can give a skirt to me
B.
I'd like a skirt
C.
No,I can do it myself
D.
I can do what I want
【单选题】—What can you do, Lin Tao?     —______.
A.
I like sports
B.
I want to join the music club
C.
I am well
D.
I can play the drums
【单选题】— ____? — I'd like to see your ten-speed bicycle. [     ]
A.
What can I do for you
B.
What do you want to buy
C.
Anything the matter
D.
What's wrong
【单选题】国家一二等水准测量单一水准路线高差闭合差的分配原则是()
A.
距离成比例反号分配
B.
距离成比例同号分配
C.
测段平均反号分配
D.
测段成比例同号分配
【单选题】—_____? —Yes, please [     ]
A.
How are you
B.
Can I help you
C.
What can you do for me
D.
Nice to meet you
【单选题】- ? -Yes, I’d like to buy some milk.
A.
What can I do for you
B.
Can I help you
C.
Can you help me
D.
What do you want
【单选题】—______?     —I want to buy a dress.
A.
What do you want
B.
What do you do
C.
What can I do for you
D.
Can you help me
【单选题】气门间隙过大,发动机工作时( )。 答案
A.
气门早开
B.
气门迟开
C.
气门不能打开
D.
不影响气门开启时刻
相关题目: