皮皮学，免费搜题
登录
搜题
【单选题】
在输出电压平均值相等时 ,单相桥式整流电路中的二极管所承受的最高反向电压为12V,则单相半波整流电路中的二极管所承受的最高反向电压为 ( ) VA.
12
B.
6
C.
24
D.
8
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
【简答题】春温证见壮热头痛，口渴烦燥，时有谵语，舌绛苔黄，脉数。病机为（），主方为（）。
【简答题】请听下面五段对话，选出最佳选项。 1. Where will the two speakers probably go this morning? [ ] A. The park B. The zoo C. The museum 2. Where does the conversation most probably take place? [ ] A. On a train B....
【单选题】Read the passage Painting as a pastime and choose the best summary.
A.
Worry is an emotion that is very difficult to stop, even if you try very hard. You can stop worrying by finding a hobby but it must be the right hobby. Don't try to find a hobby quickly and if you can, have two or three that you are really interested in. If you're very rich and can have anything you want, you need discipline as well as a hobby. There are two kinds of human beings, those who love working and those who don't. For those who dislike work, hobbies are a great source of pleasure. For those who love their work hobbies can be enjoyable too.
B.
Once you start worrying it's very difficult to stop. The way to stop worrying is to find a hobby that really interests you but this is a slow process. To be really happy you need two or three hobbies that you really enjoy and they should be very different from your job. Extremely rich people need discipline, not a hobby. There are two kinds of hard-working human beings, those who work to make money and those for whom work is the greatest pleasure of all. The former are the largest group but the latter group need a hobby even more than the first group do.
C.
People often worry unless they have a hobby. You should spend quite a lot of time deciding what really interests you and then choose two or three. Wealthy people are lucky because they have everything they want and don't need hobbies. They should learn not to be bored through through the use of discipline. People who work because they have to will always enjoy hobbies. People who work because they love thier work can enjoy hobbies too and need hobbies more than the first group.
【简答题】完形填空。 Many students have hobbies, such as 1 , painting, growing vegetables in their gardens, or looking 2 animals. Some hobbies are relaxing and 3 are creative. 4 can make you grow as a person, develo...
【单选题】听力原文： Recently, over 30 million Americans of both sexes and all ages have shown great interest in walking. They have a strong desire to keep fit. By nature, Americans are enthusiastic and energetic ab...
A.
Over 30 million men.
B.
Over 30 million middle-aged men.
C.
Those energetic Americans.
D.
Americans of both sexes and all ages.
【单选题】Photoshop的应用广泛,它是一款功能强大的图像处理软件,可以制作出完美的合成图像,下面哪个领域不属于Photoshop CC的应用领域?( )
A.
平面设计
B.
建筑设计
C.
海报设计
D.
包装设计
【简答题】春温证见壮热头痛,口渴烦燥,时有谵语,舌绛苔黄,脉数。病机为 ,主方为 。
相关题目：