2020年7月10日，甲、乙签订书面合同，约定：甲在8月12日前向乙交付70台设备，货到付款；合同自双方盖章时成立。后乙欲将购买的设备转售，遂在7月15日询问甲能否按时发货，甲答复称：“没问题，盖章后就发货”。乙于是与丙签订了70台设备的买卖合同，约定乙在8月16日向丙交货。
7月20日，甲发现设备库存不足，故未在合同书上盖章，并通知乙只能交付60台设备，乙无奈同意。7月31日，甲将60台设备交付给乙。8月8日，因价格上涨，甲以合同不成立为由要求乙返还已交付的设备，被乙拒绝。
为按时向丙交货，乙在8月10日以市价购买了10台同型号设备，连同甲交付的60台设备一并交给丙。事后，乙请求甲赔偿未交付10台设备给自己造成的损失。
请根据上述材料，回答下列问题并说明理由：
（1）甲、乙在7月10日签订的买卖合同是否成立？
（2）甲是否有权请求乙返还60台设备？
（3）乙是否有权请求甲赔偿未交付10台设备所造成的损失？
答案：（1）甲、乙在7月10日签订的买卖合同不成立。合同的一般成立要件包括有双方或多方当事人、当事人就合同必要条款达成合意、合同内容明确、经过要约和承诺阶段等。合同尊重当事人的意思自治，甲、乙之间约定合同自双方盖章时成立，而甲并未盖章，因此合同并未成立。
（2）甲无权请求乙返还60台设备。承诺的内容应当与要约的内容一致。受要约人对要约的内容作出实质性变更的，为新要约。甲通知乙只能交付60台设备的意思表示构成新的要约，乙的同意构成承诺，双方之间成立60台设备的买卖合同。现设备已经交付，甲丧失所有权。
（3）乙有权请求甲赔偿未交付10台设备所造成的损失，甲需要向乙承担缔约过失责任。缔约过失责任是指在订立合同过程中，当事人一方因违反其依据诚实信用原则产生的先合同义务，而致另一方信赖利益损失时所应承担的赔偿责任。甲的答复使乙产生合理信赖，乙基于此信赖与丙签订合同，后甲未按答复出售该10台设备，致乙信赖利益损失，因此甲应承担缔约过失责任。
Direchons:Write an essay based on the chart below.In your writing,you should interpret the chart,and give your comments.You should write about 150 words on the ANSWER SHEET.
Directions:Write an essay based on the chart below.In your writing,you should 1）interpret the chart,and 2）give your comments.You should write about 150 words on the ANSWER SHEET.
Directions:Write an essay based on the chart below.In your writing,you should interpret the chart,and give your comments.You should write about 150 words on the ANSWER SHEET.
Directions:Write an essay based on the following table.In your writing,you should interpret the table,and give your comments.You should write about 150 words on the ANSWER SHEET.
Write an essay based on the chart below.In your writing,you should interpret the chart,andgive your comments.You should write about 150 words on the ANSWER SHEET.
Directlions:Suppose your best friend Tom is admitted by a postgraduate program.Write a letter to 1）express your congratulation,and 2）give him some suggestions based on your experience.You should write about 100 words on the ANSWER SHEET.Do not use your own name.Use"Li Ming"instead.Do not write your address.
Directions:You are the president of a student union.Write a memo to Julia Alexander,the vice-president on a volunteer activity to tell her detailed information,and ask her to write a training plan.You should write about 100 words on the ANSWER SHEET Do not use your own name.Use"Li Ming"instead.Do not write your address.
Directions:The environment protection club is going to organize some activities with the theme of"Creating Green Culture and Building Low-Carbon Campus".As the club leader,you will write a notice to the members to explain the importance and arrangements of those activities.You should write about 100 words on the ANSWER SHEET.Do not use your own name.Use"Li Ming"instead.Do not write your address.
Directions:Suppose your graduation thesis is awarded as an excellent one,write an email to your thesis supervisor to express your appreciation.You should write about 100 words on the ANSWER SHEET.Do not use your own name.Use"Li Ming"instead.Do not write your address.
Directions:Suppose you borrow a book from your friend,but unfortunately it is lost.Write an email to apologize.You should write about 100 words on the ANSWER SHEET.Do not use your own name,Use"Li Ming"instead.Do not write your address.
