精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

(Ⅰ)求的值,(Ⅱ)若有一科不合格.則不能拿到高中畢業(yè)證.求學(xué)生甲不能拿到高中畢業(yè)證的概率,(Ⅲ)若至少有兩科得A.一科得B.就能被評為三好學(xué)生.則學(xué)生甲被評為三好學(xué)生的概率, 查看更多

 

題目列表(包括答案和解析)

請拼寫出符合題意的單詞;注意正確形式;若有錯誤概不給分。

1. If Tom plans to pass the physical exam, he’d better change his _____ (態(tài)度) towards learning.

2. The brave policeman is still ______ (恢復(fù)) from his operation after fighting with the thief.

3. I would be g______ if you could give me some advice on how to write a good travel journal.

4. The successful program “Where are we going, dad?” was _____ (組織) by Hunan TV station.

5. ______ (逐漸) the children began to understand the importance of honesty.

查看答案和解析>>

(本題12分)根據(jù)空氣質(zhì)量指數(shù)API(為整數(shù))的不同,可將空氣質(zhì)量分級如下表:

對某城市一年(365天)的空氣質(zhì)量進(jìn)行監(jiān)測,獲得的API數(shù)據(jù)按照區(qū)間進(jìn)行分組,得到頻率分布直方圖如圖.                         

(1)求直方圖中的值;

(2)計算一年中空氣質(zhì)量為良的天數(shù);

(3)某環(huán)保部門準(zhǔn)備在一年內(nèi)隨機(jī)到該城市考察兩次空氣質(zhì)量,求兩次考察空氣質(zhì)量都為良的概率(結(jié)果用分?jǐn)?shù)表示).

查看答案和解析>>

以下是五個應(yīng)聘者的信息請閱讀A至F職位招聘的信息,選出符合他們要求的最佳選項。選項中有一項是多余選項。(答案寫在答題卷上)

1.Elizabeth Nagata.

 Elizabeth once studied in a secretarial program when she was at university. She has worked in Sumitomo Corporation as an executive assistant for eight years.

2.James Florian.

James once worked as a salesperson and served as the director of new home sales in both Forest Lakes and Glenmore for three years. He can speak excellent German and English, and he is very good at dealing with people.

3.Arthur Smith.

Arthur, a 22-year-old boy, has just graduated from college. He’s got a diploma in Library Technician Program. Wishing to have some free time, he doesn’t want to work full time.

4.Gillian Anderson.

Gillian graduated from the University of Manchester and got a Master’s Degree in Library Science five years ago. As soon as she left school, she worked in St. Bride Printing Library as a librarian. Now she is skilled in dealing with almost everything in the library system.

5..Jerome Fingelhamm.

Jerome, aged 32, majored in computer science when he was at university. He has worked in a software company for six years and is an expert at both software and hardware. He got a driver’s license when he was eighteen years old.

A.Sales Executive

We are looking for intelligent sales staff for our ever-growing team. Applicants must have at least one year sales experience, knowledge of English language publications and media, good English and social skills.

B.Executive Assistant Vancouver

Island Regional Library (VIRL) has an opportunity for an executive assistant. A diploma in Business Administration or a secretarial program is needed. A minimum (最小值) of five years’ experience as an executive assistant to an executive director is required.

C.Reference Specialist

You’re responsible for providing support for reference services in the library system. The successful applicant must have a Master’s Degree in Library Science and a minimum of three years’ experience as a professional librarian.

D.Library Technician

We need a part-time library technician. Your position is responsible for library cataloging (編目錄), binding, ordering publications, assisting in legal research. Both technical and reference services are required. The successful applicant should have a Library Technician diploma (文憑).

E. Circulation Director(發(fā)行總監(jiān))

We are looking for a circulation director. The successful applicant must have good managing skills, including the ability to assign tasks to ensure the work of the circulation department is done to the highest standard. A sales experience of at least ten years is needed.

F. Computer & Network Assistant

This position is responsible for the activities related to the use of automated (自動化的) systems. Duties include installing (安裝), repairing and updating software and hardware. A driver’s license is necessary.

 

查看答案和解析>>

第二節(jié):以下是五個應(yīng)聘者的信息請閱讀A至F職位招聘的信息,選出符合他們要求的最佳選項。選項中有一項是多余選項。(答案寫在答題卷上)

Elizabeth Nagata.

 Elizabeth once studied in a secretarial program when she was at university. She has worked in Sumitomo Corporation as an executive assistant for eight years.

James Florian.

James once worked as a salesperson and served as the director of new home sales in both Forest Lakes and Glenmore for three years. He can speak excellent German and English, and he is very good at dealing with people.

Arthur Smith.

Arthur, a 22-year-old boy, has just graduated from college. He’s got a diploma in Library Technician Program. Wishing to have some free time, he doesn’t want to work full time.

Gillian Anderson.

Gillian graduated from the University of Manchester and got a Master’s Degree in Library Science five years ago. As soon as she left school, she worked in St. Bride Printing Library as a librarian. Now she is skilled in dealing with almost everything in the library system.

.Jerome Fingelhamm.

Jerome, aged 32, majored in computer science when he was at university. He has worked in a software company for six years and is an expert at both software and hardware. He got a driver’s license when he was eighteen years old.

Sales Executive

We are looking for intelligent sales staff for our ever-growing team. Applicants must have at least one year sales experience, knowledge of English language publications and media, good English and social skills.

B. Executive Assistant Vancouver

Island Regional Library (VIRL) has an opportunity for an executive assistant. A diploma in Business Administration or a secretarial program is needed. A minimum (最小值) of five years’ experience as an executive assistant to an executive director is required.

C. Reference Specialist

You’re responsible for providing support for reference services in the library system. The successful applicant must have a Master’s Degree in Library Science and a minimum of three years’ experience as a professional librarian.

D. Library Technician

We need a part-time library technician. Your position is responsible for library cataloging (編目錄), binding, ordering publications, assisting in legal research. Both technical and reference services are required. The successful applicant should have a Library Technician diploma (文憑).

E. Circulation Director(發(fā)行總監(jiān))

We are looking for a circulation director. The successful applicant must have good managing skills, including the ability to assign tasks to ensure the work of the circulation department is done to the highest standard. A sales experience of at least ten years is needed.

F. Computer & Network Assistant

This position is responsible for the activities related to the use of automated (自動化的) systems. Duties include installing (安裝), repairing and updating software and hardware. A driver’s license is necessary.

查看答案和解析>>

第二節(jié):以下第81至85題是五個應(yīng)聘者的信息。請閱讀A至F職位招聘的信息,選出符合他們要求的最佳選項。選項中有一項是多余選項。(答案寫在答題卷上)

______ 81. Elizabeth Nagata.

Elizabeth once studied in a secretarial program when she was at university. She has worked in Sumitomo Corporation as an executive assistant for eight years.

______ 82.James Florian.

James once worked as a salesperson and served as the director of new home sales in both Forest Lakes and Glenmore for three years. He can speak excellent German and English, and he is very good at dealing with people.

______ 83.Arthur Smith.

Arthur, a 22-year-old boy, has just graduated from college. He’s got a diploma in Library Technician Program. Wishing to have some free time, he doesn’t want to work full time.

______ 84. Gillian Anderson.

Gillian graduated from the University of Manchester and got a Master’s Degree in Library Science five years ago. As soon as she left school, she worked in St. Bride Printing Library as a librarian. Now she is skilled in dealing with almost everything in the library system.

______ 85.Jerome Fingelhamm.

Jerome, aged 32, majored in computer science when he was at university. He has worked in a software company for six years and is an expert at both software and hardware. He got a driver’s license when he was eighteen years old.

Sales Executive

We are looking for intelligent sales staff for our ever-growing team. Applicants must have at least one year sales experience, knowledge of English language publications and media, good English and social skills.

B. Executive Assistant Vancouver

Island Regional Library (VIRL) has an opportunity for an executive assistant. A diploma in Business Administration or a secretarial program is needed. A minimum (最小值) of five years’ experience as an executive assistant to an executive director is required.

C. Reference Specialist

You’re responsible for providing support for reference services in the library system. The successful applicant must have a Master’s Degree in Library Science and a minimum of three years’ experience as a professional librarian.

D. Library Technician

We need a part-time library technician. Your position is responsible for library cataloging (編目錄), binding, ordering publications, assisting in legal research. Both technical and reference services are required. The successful applicant should have a Library Technician diploma (文憑).

E. Circulation Director(發(fā)行總監(jiān))

We are looking for a circulation director. The successful applicant must have good managing skills, including the ability to assign tasks to ensure the work of the circulation department is done to the highest standard. A sales experience of at least ten years is needed.

F. Computer & Network Assistant

This position is responsible for the activities related to the use of automated (自動化的) systems. Duties include installing (安裝), repairing and updating software and hardware. A driver’s license is necessary.

 

查看答案和解析>>

1.解析:,故選A。

2.解析:抽取回族學(xué)生人數(shù)是,故選B。

3.解析:由,得,此時,所以,,故選C。

4.解析:∵,∴,∴,故選C。

5.解析:設(shè)公差為,由題意得,,解得,故選C。

6.解析:∵雙曲線的右焦點(diǎn)到一條漸近線的距離等于焦距的,∴,又∵,∴,∴雙曲線的漸近線方程是,故選D.

7.解析:∵為正實數(shù),∴,∴;由均值不等式得恒成立,,故②不恒成立,又因為函數(shù)是增函數(shù),∴,故恒成立的不等式是①③④。故選C.

8.解析:∵,∴在區(qū)間上恒成立,即在區(qū)間上恒成立,∴,故選D。

9.解析:∵

,∴此函數(shù)的最小正周期是,故選C。

10.解析:如圖,∵正三角形的邊長為,∴,∴,又∵,∴,故選D。

11.解析:∵在區(qū)間上是增函數(shù)且,∴其反函數(shù)在區(qū)間上是增函數(shù),∴,故選A

12.解析:如圖,①當(dāng)時,圓面被分成2塊,涂色方法有20種;②當(dāng)時,圓面被分成3塊,涂色方法有60種;

③當(dāng)時,圓面被分成4塊,涂色方法有120種,所以m的取值范圍是,故選A。

13.解析:將代入結(jié)果為,∴時,表示直線右側(cè)區(qū)域,反之,若表示直線右側(cè)區(qū)域,則,∴是充分不必要條件。

學(xué)科網(wǎng)(Zxxk.Com)14.解析:∵,∴時,,又時,滿足上式,因此,

學(xué)科網(wǎng)(Zxxk.Com)15.解析:設(shè)正四面體的棱長為,連,取的中點(diǎn),連,∵的中點(diǎn),∴,∴或其補(bǔ)角為所成角,∵,∴,∴,又∵,∴,∴所成角的余弦值為

學(xué)科網(wǎng)(Zxxk.Com)16.解析:∵,∴,∵點(diǎn)的準(zhǔn)線與軸的交點(diǎn),由向量的加法法則及拋物線的對稱性可知,點(diǎn)為拋物線上關(guān)于軸對稱的兩點(diǎn)且做出圖形如右圖,其中為點(diǎn)到準(zhǔn)線的距離,四邊形為菱形,∴,∴,∴,∴,∴,∴向量的夾角為

17.(10分)解析:(Ⅰ)由正弦定理得,,…2分

,………4分

(Ⅱ)∵,∴,∴,………………………6分

又∵,∴,∴,………………………8分

。………………………10分

18.解析:(Ⅰ)∵,∴;……………………理3文4分

(Ⅱ)∵三科會考不合格的概率均為,∴學(xué)生甲不能拿到高中畢業(yè)證的概率;……………………理6文8分

(Ⅲ)∵每科得A,B的概率分別為,∴學(xué)生甲被評為三好學(xué)生的概率為。……………………12分

19.(12分)解析:(Ⅰ)∵,∴

 ,,……………3分

(Ⅱ)∵,∴

,∴數(shù)列自第2項起是公比為的等比數(shù)列,………………………6分

,………………………8分

(Ⅲ)∵,∴,………………10分

。………………………12分

20.解析:(Ⅰ)∵,∴,∵底面,∴,∴平面,∴,又∵平面,∴,∴平面,∴。………………………4分

(Ⅱ)∵平面,∴,∴為二面角的平面角,………………………6分

,∴,又∵平面,∴,∴二面角的正切值的大小為。………………………8分

(Ⅲ)過點(diǎn),交于點(diǎn),∵平面,∴在平面內(nèi)的射影,∴與平面所成的角,………………………10分

學(xué)科網(wǎng)(Zxxk.Com),∴,又∵,∴與平面所成的角相等,∴與平面所成角的正切值為。………………………12分

解法2:如圖建立空間直角坐標(biāo)系,(Ⅰ)∵,,∴點(diǎn)的坐標(biāo)分別是,∴,設(shè),∵平面,∴,∴,取,∴,∴。………………………4分

(Ⅱ)設(shè)二面角的大小為,∵平面的法向量是,平面的法向量是,∴,∴,∴二面角的正切值的大小為。………………………8分

(Ⅲ)設(shè)與平面所成角的大小為,∵平面的法向量是,∴,∴,∴與平面所成角的正切值為。………………………12分

21.解析:(Ⅰ)設(shè)拋物線方程為,將代入方程得

所以拋物線方程為。………………………2分

由題意知橢圓的焦點(diǎn)為

設(shè)橢圓的方程為

∵過點(diǎn),∴,解得,

∴橢圓的方程為。………………………5分

(Ⅱ)設(shè)的中點(diǎn)為的方程為:

為直徑的圓交兩點(diǎn),中點(diǎn)為

設(shè),則

  

………………………8分

………………………10分

當(dāng)時,

此時,直線的方程為。………………………12分

22.(12分)解析:(Ⅰ)∵是偶函數(shù),∴

又∵,………………………2分

得,

時,時,時,;∴時,函數(shù)

精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区
国产在线精品国自产拍免费| 91在线观看成人| 久久久影视传媒| 国产精品自拍三区| 久久精品一二三| 床上的激情91.| 亚洲日本一区二区三区| 色婷婷亚洲精品| 亚洲高清一区二区三区| 91精品国产乱码| 国产曰批免费观看久久久| 国产欧美一区二区在线| 99精品欧美一区二区蜜桃免费| 亚洲六月丁香色婷婷综合久久| 欧洲在线/亚洲| 国产精品资源站在线| 国产精品久久久久天堂| 成人一区二区三区在线观看| 成人欧美一区二区三区小说| 欧美影视一区在线| 日本三级亚洲精品| 国产精品一区二区三区网站| 中文字幕欧美国产| 日本韩国一区二区三区视频| 日韩av在线发布| 久久久久久影视| 91麻豆视频网站| 日韩成人午夜电影| 国产视频一区二区三区在线观看| 9i在线看片成人免费| 亚洲电影一区二区| 日韩精品一区二区三区swag| 国产成人精品www牛牛影视| 亚洲免费观看高清完整版在线观看 | 3atv在线一区二区三区| 国产一区二区三区蝌蚪| 亚洲伦理在线免费看| 91精品国产一区二区三区 | 91免费国产在线| 麻豆久久久久久久| 国产精品久久福利| 678五月天丁香亚洲综合网| 国产精品99久久久久久久女警| 亚洲另类在线一区| 日韩免费高清av| 99精品视频在线免费观看| 日韩电影一区二区三区四区| 日本一二三四高清不卡| 欧美日韩成人综合在线一区二区| 国产乱子伦视频一区二区三区| 亚洲综合网站在线观看| 久久久综合精品| 欧美日韩国产在线播放网站| 大美女一区二区三区| 午夜一区二区三区视频| 国产精品嫩草99a| 欧美一级午夜免费电影| 91丨九色porny丨蝌蚪| 九九精品视频在线看| 亚洲一区二区三区自拍| 久久久久久久久99精品| 欧美日韩亚洲丝袜制服| 成人av网在线| 激情深爱一区二区| 亚洲va天堂va国产va久| 国产精品电影一区二区| 精品久久人人做人人爽| 欧美色视频在线| av福利精品导航| 国产一区二区三区在线观看免费视频| 亚洲一区二区五区| 国产精品伦理在线| 精品国产乱码久久久久久久久 | 欧美性色综合网| 成人国产亚洲欧美成人综合网| 蜜桃视频在线一区| 亚洲国产精品影院| 自拍av一区二区三区| 国产午夜亚洲精品理论片色戒| 91精品久久久久久久91蜜桃| 在线看日本不卡| 99久久国产综合精品女不卡| 国精品**一区二区三区在线蜜桃| 丝袜亚洲另类欧美综合| 亚洲精品美国一| 国产精品久久影院| 国产日韩欧美激情| 精品国精品自拍自在线| 91精品国产麻豆| 欧美日韩国产大片| 欧美在线小视频| 日本二三区不卡| 91麻豆福利精品推荐| 成人av电影观看| 粉嫩aⅴ一区二区三区四区| 国产一区二区女| 韩国欧美一区二区| 精品一区二区三区的国产在线播放 | 欧美男女性生活在线直播观看| 色婷婷亚洲精品| 91小视频免费观看| 成人av资源站| 成人精品视频一区| 国产iv一区二区三区| 国产精品一二三四五| 国产一区二区影院| 国产一区二区不卡老阿姨| 久久99久久精品| 精品一二三四在线| 狠狠色丁香九九婷婷综合五月| 另类欧美日韩国产在线| 美女任你摸久久| 久久精品国产秦先生| 精品在线播放午夜| 精品一区二区在线观看| 精品一区二区在线看| 国产自产2019最新不卡| 国产精品一区二区你懂的| 国产激情视频一区二区三区欧美| 国产一本一道久久香蕉| 国产精品自在欧美一区| 高清成人在线观看| 成人午夜看片网址| 91一区二区在线观看| 在线免费观看成人短视频| 欧美日韩视频在线一区二区| 欧美日本一区二区| 日韩一区二区麻豆国产| 亚洲精品一区二区三区在线观看| 2021国产精品久久精品| 欧美经典一区二区三区| 日韩美女精品在线| 亚洲综合色成人| 日韩在线一区二区| 狠狠网亚洲精品| 懂色av中文字幕一区二区三区| 成人免费毛片嘿嘿连载视频| 一本到高清视频免费精品| 欧美无人高清视频在线观看| 欧美一区二区精品| 久久精品欧美一区二区三区麻豆| 国产精品美女久久久久aⅴ国产馆| 亚洲人成伊人成综合网小说| 午夜精品久久久久影视| 极品少妇一区二区| 成人污视频在线观看| 一本大道综合伊人精品热热| 欧美高清一级片在线| 久久综合久久综合久久| 中文字幕在线不卡国产视频| 亚洲一区二区三区国产| 久久成人免费网站| 不卡的av电影| 欧美日韩中文字幕精品| 精品国产一区二区三区久久影院| 国产精品人妖ts系列视频| 亚洲欧美激情一区二区| 日韩中文字幕亚洲一区二区va在线 | 色综合天天综合狠狠| 91精品国产麻豆国产自产在线| 久久人人97超碰com| 亚洲精选一二三| 麻豆91在线观看| 成人黄动漫网站免费app| 欧美日韩国产高清一区二区| 久久久久国产一区二区三区四区| 最新国产精品久久精品| 日韩影院免费视频| 粉嫩13p一区二区三区| 欧美三日本三级三级在线播放| 亚洲精品在线免费观看视频| 亚洲乱码国产乱码精品精可以看| 麻豆精品国产91久久久久久| 91在线观看地址| 欧美tickle裸体挠脚心vk| 亚洲人成小说网站色在线| 免费成人在线播放| 91婷婷韩国欧美一区二区| 日韩一区二区三区四区| 最新国产精品久久精品| 蓝色福利精品导航| 色噜噜狠狠成人中文综合| 欧美xfplay| 亚洲综合激情另类小说区| 国产精品夜夜嗨| 欧美欧美欧美欧美| 国产精品午夜电影| 美女视频一区在线观看| 色综合色狠狠综合色| 久久久五月婷婷| 五月激情六月综合| aaa亚洲精品| 26uuu亚洲| 日韩中文字幕麻豆| 91老师片黄在线观看| 久久久久亚洲综合| 免费在线观看不卡| 欧美一a一片一级一片| 国产精品欧美综合在线| 久久精品国产99久久6|