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Dagger框架作用是什么?它有哪些重要的注解?帮我们生成Component接口类的实现类DaggerComponent,是在哪个阶段?

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简述从创建启动ActivityA,点击A界面上的按钮,跳转到ActivityB,再从界面B点击返回按钮,返回界面A,再点击返回按钮返回到桌面,这四个过程中,ActivityA生命周期执行过程。

什么是ANR?ANR发生场景有哪些?

Part I Listening Comprehension (20 minutes)Directions: This part is to test your listening ability. It consists of 3 sections.Section ADirections:This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. Both the dialogues and questions will be spokenonly once. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and Dgiven in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center.Example:You will hear:You will read: A.New York City. B.An evening party.C.An air trip. D.The man’s job.From the dialogue we learn that the man is to take a flight to New York. Therefore, C.An air tripis the correct answer. You should mark C on the Answer Sheet with a single line through the center. [A] [B] [C] [D]Now the test will begin.1.A) The price of the product. C) The delivery of his order.B)The charge of the service. D) The packing of the goods.2.A)Giving a lecture. C) Preparing a party.B)Taking an interview. D) Having an exam.3.A) Its food is delicious. C) It is close to his office.B)Its price is reasonable. D) It provides good service.4.A)By sea. B) By air. C) By train. D) By truck.5.A) Asking the way. C) Buying air tickets.B) Renting a car. D) Booking hotel rooms.Section BDirection:This section is to test your ability to understandshortconversations.There are 2 recorded conversations in it.After each conversation,there are some recorded questions .Both the conversations and questions will be spokentwo times. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center.Conversation 16.A) Open a newshoe store. C) Invite the woman to his company.B)Participate in a trade fair. D) Pace an order with the woman.7.A) An advertising brochure. C) An invitation letter.B)A price list. D) A few samples.Conversation 28.A) At a hotel. C) In a restaurant.B) At the airport. D) In a bank.9. A) To buy a ticket. C) To place an order.B) To book a taxi. D) To make an appointment.10. A) By 7:00. C) By 9:00.B) By 8:00. D) By 10:00.Section CDirections:In this section you will hear a recorded short passage. The passage is printed in the test paper, but with some words or phrase missing. The passage will be read two times. You are required to put the missing words or phrases on the Answer Sheet in order of the numbered blanks according to what you hear.Now listen to the passage.An interviewer sometimes starts with an open-ended question like Could you tell me something about yourself?It is a way to break the ice and make you feel11during the interview. It is alsoa way for the interviewer to know more about your personality to help him or her to12if you are a good fit for the job.It is not a good idea to talk too much about yourself because the interviewer doesn’t want to know everything about you. But on the other hand, telling13can make him or her wonder why you aren’t more open. So it’s a good idea to share some14.These interests may not15your work.Section DDirections:This section is totestyour ability to comprehend short passages. You will hear a recorded passage.After that you will hear five questions. Both the passage and the questions will be readtwo times. When you hear a question .you should complete the answer to it with a word or a short phrase (in no more than 3words). The questions and incomplete answers are printed in your test paper. You should write your answers on the answer sheet correspondingly. Now listen to the passage.16.What does the speaker talk about first in his speech?The speaker first gives about his company.17. What are the main products of the company?Clothing,and household products.18. How long has the company been in business?Over.19. Where can people find job openings at Family Dollar?On its.20. How can people apply for the jobs?They can make their application .

结合Button的点击事件，简述你对观察者模式的理解。