椭圆x²/a²+y²/b²=1（a＞b＞0）的左右焦点分别为F1，F2过F2作x轴

电泳喷涂和阳极氧化有什么区别? 铝型材氧化工艺中电解着色就是电泳? 电泳涂装的铝型材它的表面处理是需要阳极氧化还是一般的氧化? 做铝材氧化的,想问下装饰性铝阳极氧化的工艺流程是怎么样的? Where is the park?It's------- ------- the hospital.,还有一个，Where is the post office?It's ______ the library? The Internet makes our life ___?a.easily b.easy c.clearly d.wonderfully Our life is becoming more and more convenient because of the Internet.这里的because of 能换成for吗?为什么? 英语翻译什么叫“在一个单词中”“因特网已经使我们的生活更多姿多彩”?不太懂 we talk about our hobbies什么意思.不知道哪个更精确点.好啊,反正我分多. Pollution makes our life more danger and less healthy.1,make...不是只能加形容词或动词吗？怎么加名词了？修饰形容词只能用less?修饰名词呢？ Let's talk about our ______ project and we'll be ______.(group) 什么是阳极氧化铝材, 阳极氧化铝材质本身也较为容易产生凹痕.庆幸的是,也许是颜色的关系,掉漆现象目前仅限于黑色版本,还没有用户反映白色版iPhone 5掉漆.根据苹果在美国市场的保修条例,出现此类情况的iPhone 5 Could you tell me where the nearest hospital is could you tell me (where is the nearest hospital)(if it be rainy tomorrow)WHY USE IT lExcuse me ,could you tell me where the nearest hospotal is?The nearest hospital?You will have towalk ____.A 400 meters away B 400 meter far C 400 meter farther Our summer holiday is about two months long 同义句 our summer holiday is _about_two_months_long._ 对划线部分提问 ___ the ___ of your summer holiday?There were no students on the beach.同义句转换___ ___ the students were on the beach. our summer holiday lasts for two months同义句Our holiday lasts for two months.(转换为同义句)The ________ of our holiday ________ two months. My Summer Holiday I had a happy summer holiday.It lasted for about two months.At the beginning of tMy Summer HolidayI had a happy summer holiday.It lasted for about two months.At the beginning of the holiday,I just stayed home,for I was tired from th Here in jinan the summer holiday usually _______about two months.A.last B.lasts C.is lastingD.lasted where is the nearest post office 改为同义句（ ）（ ）a post office ( ) here? Where is the nearest post office?改为同义句______ _____ _____ ______ _____the nearest post office? where is the nearest post office? can you tell me ___the nearest post office___?同义句转换 where is the post office?(改为同义句) where is the post office的同义句怎么变____ tell me ___the post office? 一道英语选择题：There was nothing in the room but a ____ chair.A.three-leggedB.three leggedC.three-legsD.three legs 产品阳极氧化是什么颜色.为什么要阳极氧化. 阳极氧化的颜色可以有多少 可不可以用200字概括有关三国演义的故事?比如说草船借箭等故事,市有关三国演义的 如何快速背元素周期表（初三） 元素周期表哪些内容要背?相对的原子质量也需要背下来吗?请知道的朋友告知一下,